Work and Energy 8.3: Additional Problem 7

Description

A 5.0-kg block is lifted from rest by an external agent, then returned to its original position as shown in Animation 1 (position is in meters and time is in seconds). An identical block is pushed along the surface which has a coefficient of kinetic friction of  0.20. As with the first block, it is returned to its original position in Animation 2. 

Question

Determine the work done by gravity on the block in Animation 1and the work done by friction on the block in Animation 2.  Start

Answer

0 J / -165 J.

Reference

See Giancoli-PA: 6-5, Giancoli-SE: 8-1.

Credits

Physlet problem authored by Mario Belloni.

2000 by Prentice-Hall, Inc. A Pearson Company