A 9 kg log is being dragged along flat ground by a 120 N force at an angle of 45°. If the log accelerates at a rate of 0.78 m/s2, what is the normal force acting on the log?

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Klein Mioke · Answer 1 · 2021-04-05T07:32:49+0000

9514 1404 393

Answer:

3.347 N

Explanation:

The vertical component of the dragging force is (120 N)/√2, so the net downward force is the difference between that due to gravity and the upward component of the dragging force.

(9.8 m/s²)(9 kg) -(120 N)/√2 = 3.347 N

The normal force acting on the log is 3.347 N.

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A 9 kg log is being dragged along flat ground by a 120 N force at an angle of 45°. If the log accelerates at a rate of 0.78 m/s2, what is the normal force acting on the log?

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