A man produces a power output P as he lifts a weight of 200 newtons to height H in time T. If a second person is to lift the same weight to height of 2H in time T/2 he would produce a power output of * P/4
P/2
2P
4P

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.

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?