A 6kg block, starting at rest, is pulled up a ramp by a motor coiling a rope such that the tension is 60N. The ramp has a coefficient of friction of 0.3 and the ramp has an inclination angle of 40 degrees. The time the block moves up the ramp is 1.5 seconds.
a. What is the acceleration of the block?
b. How much energy is supplied by the motor to move the block up the ramp?