Joey drags his 25kg brother across the floor with a force of 12 N to the right at a constant velocity. Determine the normal force and the frictional force applied to the little brother. Draw the force diagram before solving the problem.

Question

Kai Ingram

Physics

4 December, 07:27

Joey drags his 25kg brother across the floor with a force of 12 N to the right at a constant velocity. Determine the normal force and the frictional force applied to the little brother. Draw the force diagram before solving the problem.

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Answers (1)

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Skylar · Answer 1

Since the velocity is constant, using Newton's First and Third Laws we know that the Friction and the Force are equal. So the friction is - 12 Newtons.

Now the Normal Force (N) is also equal to the weight since the body is at a perfect balance.

So Weight is m*g = 25*10 = 250N

So N=250N