Physics Multiple Choice
A small sphere is moving at a constant speed in a vertical circle. Which of the following quantities is changing?
i. kinetic energy ii. potential energy iii. momentum
i and ii only
i and iii only
i and ii only
ii only
iii only
ii and iii only
SOLUTION MISSING: Unfortunately the author of this youtube video removed their content. You may be able to find a similar problem by checking the other problems in this subject. If you want to contribute, leave a comment with the link to your solution.Related Problems
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In the system of two blocks and a spring shown below, blocks 1 and 2 are connected by a string that passes over a pulley. The initially unstretched spring connects block 1 to a ridged wall. Block 1 is released from rest, initially slides to the right, and is eventually brought to rest by the spring and the friction on the horizontal surface. Which of the following is true of the energy of the system during the process?
E. The potential energy lost by block 2 is greater in magnitude than the potential energy gained by the spring
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A. Zero
B. the frictional force on block 1
C. the vector sum of the force on block 1 due to the friction and tension in the spring
D. the sum of the weights of the two blocks
E. Shiang doesn't care, he just wants to sleep
F. the difference in the weights of the two blocks