Barron's 2nd Edition PT1 Q37

Barron's Book

37) Question 37 asks us to find the power when the mass is moved up the incline at the constant speed. The problem relates to question 36 and question 35. First, let's try to find an appropriate equation for power.

Where P is power, W is work, t is time, F is applied force, d is distance, and v is velocity

If we refer back to problem 35, the force is 10 Newtons. The problem also tells us that the block is traveling at 0.5 m/s. We have both the force and velocity, so we can solve for power.

Where P is power, F is applied force, and v is velocity

Answer: C