How does the work needed to lift an object and the gravitational potential energy of the object compare?

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

In what direction does an applied force move an object