A block sliding down an inclined plane slows to a stop. Which of the following i

Question

A block sliding down an inclined plane slows to a stop. Which of the following is true? A. A change in the normal force caused the block to stop. B. The kinetic friction force was less than the component of the weight down the inclined plane. C. The kinetic friction force was greater than the component of the weight down the inclined plane. D. The static friction force overcame the kinetic friction force. Atwood's machine has two masses attached by a string suspended over a pulley as shown. If m_1 accelerates upwards after being released from rest, which best compares m_1 and m_2? A. m_1 m_2 D. cannot be determined

Explanation / Answer

24 .Ans B.

As the component was moving and slowed to stop, Hence kinetic friction was acting on the block. So as the block stop, hence the kinetic friction was greater than the componentof weight.

25.Ans A

As m1 moves upward, hence m2 > m1

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