28-11-2021
Physics

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if you exert a horizontal force of 200N to slide a crate across a factory floor how much friction is exerted by the floor on the crate? Is the force of friction equal and oppositely directed to your 200-N push? If the force of friction isn't the reaction force to your push, what is?

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yeabenu2008 yeabenu2008

28-11-2021

Answer:

For the crate to move with a constant velocity, the net external force on it must be zero. Therefore, if I exert 200 N , the force of friction should also be 200 N so that there is no unbalanced force. The force of friction is exerted by the floor on the crate.

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