Using a horizontal force of 200 N , we i...

Using a horizontal force of 200 N , we intend to move a wooden cabinet across floor at a constant velocity . What is the friction force that will be exerted on the cabinet ?

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The cabinet will move with constant velocity only when the net force on it is zero.
Therefore , force of friction on the cabinet =200 N , in a direction opposite to the direction of motion of the cabinet .

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