A 20-kg wagon is pulled along the level ground by a rope inclined at 30 above the
Question:
A 20-kg wagon is pulled along the level ground by a rope inclined at 30° above the horizontal. A friction force of 30 N opposes the motion. How large is the pulling force if the wagon is moving with
(a) Constant speed and
(b) An acceleration of 0.40 m/s2?
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