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Video Clips

RealVideo®
4:56 minutes (11:04 - 16:00)
Balance of gravity and upward force; statement of Newton's third law.
None
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RealVideo®
6:10 minutes (16:00 - 22:10)
Action and reaction between two blocks, in a garden hose, and in a balloon.
Newton's Third Law (11:04 of V6)
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RealVideo®
4:14 minutes (22:10 - 26:24)
Newton's third law demonstrated through spinning engine propelled by steam.
Newton's Third Law (11:04 of V6)
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RealVideo®
4:41 minutes (26:24 - 31:05)
Third law used to calculate acceleration of earth towards and away from tossed apple.
Newton's Third Law (11:04 of V6)
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RealVideo®
9:16 minutes (0:00 - 9:16)
Weight defined; weight on accelerating scales calculated; free-fall defined.
F=ma (6:52 of V6)
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RealVideo®
6:24 minutes (9:16 - 15:40)
Acceleration and tension calculated for two masses suspended over a pulley.
Free Fall (beginning of V7)
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RealVideo®
4:47 minutes (15:40 - 20:27)
Results interpreted as masses become unbalanced; gain and loss of weight in free-fall.
Masses on a Pulley (9:16 of V7)
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RealVideo®
6:26 minutes (20:27 - 26:53)
Calculation of tension at top and bottom of loop for mass swinging in vertical plane.
Vertically Swinging Mass (42:07 of V5)
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RealVideo®
4:16 minutes (26:53 - 31:09)
Demonstration that a gallon of water is weightless in free fall during jump from table.
Free-fall (beginning of V7)
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RealVideo®
8:19 minutes (31:09 - 39:28)
Demonstration that barbell is weightless in free-fall, then very heavy on impact.
Weightlessness During Free-fall (26:53 of V7)
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RealVideo®
7:01 minutes (0:00 - 7:01)
Definition, including normal force; μs = ∠tan α proven; method for determining μs.
F=ma (6:52 of V6)
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RealVideo®
4:37 minutes (7:01 - 11:38)
Demonstration of dependence of μs on surface, but not surface area or mass.
Static Friction (beginning of V8)
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RealVideo®
9:12 minutes (11:38 - 20:50)
System of block sitting on inclined plane, connected to hanging block; calculation of conditions when block is falling or is static.
Friction (beginning of V8)
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RealVideo®
9:39 minutes (20:50 - 30:29)
Numerical calculations for pulley/plane system, including interpretation and calculation of acceleration and tension.
Friction in Pulley/Plane System (11:38 of V8)
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RealVideo®
5:53 minutes (30:29 - 36:22)
Demonstration of pulley/plane system; additional mass hangs, then falls; explanation of changing friction.
Example of Pulley/Plane System (20:50 of V8)
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RealVideo®
5:19 minutes (36:22 - 41:41)
Explanation of friction elimination by hydroplaning and air tracks, with brief demonstrations.
Static Friction (beginning of V8)
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RealVideo®
6:26 minutes (41:41 - 48:07)
Video of device that travels on cushion of CO2 on plate glass; friction so low a flea can pull a large book on the device.
Static Friction (beginning of V8)
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RealVideo®
7:51 minutes (7:43 - 15:34)
Calculation of acceleration for two blocks suspended over pulley with friction from masses and moment of inertia.
Torque, F=ma (6:52 of V6)
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Lecture Notes

PDF - 1.6 MB
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Page 1 to page 5
Step-by-step strategy for solving motion problems. Ideal pulleys, pegs, and strings are introduced. Includes a number of motion examples.
Newton's Laws
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PDF - 1.6 MB
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Page 1 to page 6
Conditions of equilibrium for particles and rigid bodies; torque axis; center of gravity; center of mass demonstration; stable and unstable equilibrium; coupled forces; equilibrium problem-solving strategy with several examples.
Lecture 25
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PDF - 1.3 MB
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Page 1
Definition, including an example of identifying action/reaction pairs.
Newton's Second Law
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Page 1 to page 13
Step-by-step strategy for solving motion problems. Ideal pulleys, pegs, and strings introduced. Includes a number of motion examples.
Newton's Laws
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PDF - 1.5 MB
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Page 1 to page 15
Conditions of equilibrium for particles and rigid bodies; torque axis; center of gravity; center of mass demonstration; stable and unstable equilibrium; coupled forces; equilibrium problem-solving strategy with several examples.
Lecture 25
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Page 1 to page 3
Statement, including an example of identifying action/reaction pairs.
Newton's Second Law
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Page 1 to page 2
Newton's first law defined; Newton's second law defined (F=ma); Newton's third law defined; inertial reference frames defined.
Kinematics
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Page 1
Direction and magnitude of friction; static and kinetic friction; coefficient of friction.
Newton's Laws
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Page 1
Direction and magnitude of spring force; spring constant; springs in parallel and series.
Newton's Laws
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Page 1 to page 4
Newton's three laws of motion defined with a sentence each.
None
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Page 20 to page 22
Action-reaction force pairs; tension in a rope; free body force diagram.
One-Dimensional Motion
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Practice Problems

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Problem 7
Using special cases and dimensional analysis to determine which acceleration for system is correct.
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Problem 6
3-part problem; calculating tension in wire, critical angle, and safe speed for flight.
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Problem 1
Forces acting on systems of two or more bodies. Solution not included.
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Problem 1
Forces acting on two blocks connected and suspended by strings. Solution not included.
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Problem 2
Forces acting on a passenger in a turning car. Solution not included.
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Problem 1 to problem 2
Forces acting on systems of multiple bodies. Solution not included.
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Problem 1 to problem 2
Forces acting on moving and stationary blocks sitting on a surface. Solution not included.
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Problem 1
Forces acting on moving and stationary blocks sitting on a surface. Solution not included.
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Problem 2
Forces acting on horizontal and vertical springs. Solution not included.
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Problem 1
Friction and acceleration; which forces must be known to solve for energy and momentum; kinetic energy and momentum in a collision. Solution not included.
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Problem 4
Forces and accelerations acting on two blocks connected by strings.
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Problem 5
Forces, including friction, acting on a cart connected to a block suspended from a pulley.
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Problem 10
Static friction between a glass and a tablecloth.
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Problem 4
Comparing the gravitational force on a car and the normal force of the ground on the car. Solution not included.
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Problem 5
Forces acting on a scale with a person jumping from it. Solution not included.
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Problem 6
Normal force exerted on a person in an accelerating elevator. Solution not included.
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Problem 7
Force needed to push a crate across a floor as a function of the surface area in contact with the floor. Solution not included.
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Problem 8
Motion of an object sliding on an inclined surface, with friction. Solution not included.
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Problem 9
Tension in a rope pulling a block with friction. Solution not included.
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Problem 10
Tension in a string connecting a moving cart and a hanging weight via a pulley. Solution not included.
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Problem 2
Forces acting on a person standing in an accelerating elevator. Solution not included.
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Problem 6
Force applied by horse teams to an evacuated hollow metal sphere. Solution not included.
None
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Problem 8
Force acting on the string of a descending yo-yo. Solution not included.
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Problem 9
Force acting on the string of an ascending yo-yo. Solution not included.
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Problem 10
Acceleration of a system of multiple masses and pulleys. Solution not included.
None
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Problem 11
Relationship between spring constants of springs used to suspend a mass. Solution not included.
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Problem 21
Forces acting on a cube lying on a spinning turntable. Solution not included.
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Problem 3
Drawing free body diagrams for tug-of-war.
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Problem 4
Motion of an object sliding off an inclined roof and falling to the ground.
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Problem 6
Approximating the force law acting between magnets.
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Problem 1
Motion of two unequal masses suspended by a string over a rod.
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Problem 14
Kinetic vs. static friction and sign; magnitude of horizontal force on suitcase.
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Exam Questions

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Problem 1
3-part problem; drawing free-body diagram and finding acceleration; force required to slide top block relative to bottom.
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Problem 2
Forces acting in systems of two or more bodies.
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Problem 4
Dynamics of an astronaut pushing a block on a surface in outer space.
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Problem 5
Motion of and forces acting on a jumping basketball player.
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Problem 8
Dynamics of a bead of water on the windshield of an accelerating car.
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Problem 9
Dynamics of a suitcase placed on a moving conveyor belt.
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Problem 10
Dynamics of a system of a mass suspended from a vertical spinning rod by a string and pulley.
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Problem 1
4-part problem; finding acceleration, tension, time, and speed for mass on table to reach pulley while other mass hangs.
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Problem 2
4-part problem; drawing free-body diagram and finding v, T for object; maximum speed with friction.
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Problem 4
Determining upward speed from a jump given force exerted on the floor.
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Problem CQ2
Effect of lifting a barbell on scale reading.
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Problem CQ5
Motion of a monkey climbing a rope that passes over a pulley and connects to a hanging block.
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Problem CQ6
Forces acting on a basketball player jumping to take a shot.
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Problem 2
Motion of an object sliding off an inclined roof and falling to the ground.
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Problem 3
Motion of a block on an inclined plane and connected to a second block via a wire that passes over a pulley.
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Problem 5
Motion of two touching blocks on a frictionless table.
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Problem 4
Motion of a mass that slides down an inclined plane and compresses a spring.
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Problem 2
Motion of two blocks on an inclined plane and connected to a third block via a wire that passes over a pulley.
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Problem 4
Modeling the forces and acceleration acting on a person riding an elevator.
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Problem 1
4-part friction and rotational kinematics problem; drawing a free-body diagram, calculating tensions, and finding unknown mass.
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