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 f

Question

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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Huyền Thanh 2 months 2021-08-02T09:41:36+00:00 1 Answers 1 views 0

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    2021-08-02T09:43:33+00:00

    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

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