Work and Energy Physlet-Based Curriculum

These examples of curricular material appear in Section 8.3. Follow a link on the left to go to the individual Physlet problems found in that section and several bonus problems only available on this CD. Below is a brief description of each animation.

Chapter Problems:

8.3.1: A mass of 2 kg is in a rather large, frictionless bowl and moves as depicted in the above animation.  8.3.2: Three balls are thrown off the top of a building, all with the same speed but different launch angles.  8.3.3: A  ball on an air track is attached to a compressed  spring (at x=0 the spring is unstretched) as shown in the animation (position is in meters and time is in seconds). 
8.3.4: A  ball on an air track is attached to a compressed  spring as shown in the animation.     

 

Additional Problems:

8.3.ap 1: A bowling ball is lifted from rest onto a shelf by an external agent.  8.3.ap 2: A 12 kg box slides down a rough ramp at constant speed as shown in the animation. Note that both gravity and friction do work on the box. 
8.3.ap 3: A  ball on an air track is attached to a compressed  spring  as shown in the animation.  8.3.ap 4: A 0.5 kg cart on an air track receives a push as shown in the animation. The spring is initially unstretched with a spring constant of k=100N/m.
8.3.ap 5:  A 12 kg box slides down a 30 frictionless ramp at constant speed as shown in the animation. Note that both gravity and the hand do work on the box.  8.3.ap 6: A pendulum of unknown mass is suspended from a platform and swings as shown in the animation.  
8.3.ap 7:  A 5kg block is lifted from rest by an external agent, then returned to its original position as shown in Animation 1. An identical block is pushed along the surface which has a coefficient of kinetic friction of  0.2. As with the first block, it is returned to its original position in Animation 2.  8.3.ap 8: A pendulum of unknown mass is suspended from a platform and swings as shown in the animation (assume negligible loss of energy due to air resistance; position is shown in meters and time is in seconds).
8.3.ap 9: A 2 kg pendulum bob swings suspended from a platform as shown in the animation above.   8.3.ap 10: A mass of 2kg is in a rather large bowl and slides subject to friction as depicted in the above animation.