A potter's wheel decelerates from 50 rev/min to 30 rev/min in 5.0 s, with a constant deceleration. What is the magnitude of the deceleration?
A)
4.0 rad/s2
B)
0.42 rad/s2
C)
25 rad/s2
D)
38 rad/s2
E)
20 rad/s2
B
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A. 60 B. 130 C. 120 D. 30
Consider a point on a bicycle tire that is momentarily in contact with the ground as the bicycle rolls across the ground with constant speed. The direction for the acceleration for this point at that moment is:
a. upward. c. forward. b. down toward the ground. d. at that moment the acceleration is zero.
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What will be an ideal response?
Equilibrium: A 30.0-kg load is being held in place using massless wires in the ideal pulley arrangement shown in the figure. What is the magnitude of the force F?
Fill in the blank(s) with the appropriate word(s).