Part A

The motor $M$ pulls in its attached rope with an acceleration $a_p=9\frac{m}{s^2}.$ The coefficient of kinetic friction between the crate and the plane is ${}_k=0\mathrm{.}2.$ Neglect the mass of the pulleys and rope. $($Figure $1)$

Determine the towing force exerted by $M$ on the rope in order to move the $40-kg$ crate up the inclined plane.

Express your answer to three significant figures and include the appropriate units.

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