At the instant shown point p on the cable has a velocity vp$=12$m$/$s which is increasing at rate of ap$=6$m$/$s

Problem $4$: At the instant shown, point $P$ on the cable has a velocity $V_p=12\frac{m}{s}$ which is increasing at a rate of $a_p=6\frac{m}{s^2}.$ If the motor $M$ operates with an efficiency $=0\mathrm{.}85$ and the mass of block $A$ is $75$ kg $,$ determine the power input to the motor