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March 25, 2017

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A wooden box weighing 281 N is pushed across the floor by a workman who exerts a horizontal force of 166 N. If the force of friction between the box and the floor is 21 N, what is the acceleration (in meters/second^2) of the box?

  • physics - ,

    the force that are acting on the box are1)normal force, gravational force, horizontal force, friction force. If you want to find the a, use the eq of new ton laws. F=MA. For the force you need to add friction force and horizontal force. But you don't know the mass of the object. So u need to find the mass by N-mg=0. After that plug in mass in the first eq and solve it. GOOD LUCK.

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