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A block with mass ?1 is placed on an inclined plane with slope angle ? and...

A block with mass ?1 is placed on an inclined plane with slope angle ? and is connected to a hanging block with mass ?2 by a cord passing over a small, frictionless pulley. The coefficient of static friction is ?s, and the coefficient of kinetic friction is ?k.

(a) Find the value of ?2 for which the block of mass ?1 moves up the plane at a constant speed once it is set in motion

(b) Find the value of for which the block ?1 moves up the plane at a constant speed

a figure with labels pls

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