A woman is walking, swinging her arms through a 30° angle every second. The length of each arm is 75 cm. Assuming that the arms move with constant speed during each swing, find the force that the blood vessel must exert on a 2-gram drop of blood from the end of the arm.

The two required components for a generator are

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

What was the first instrument to ever record an earthquake?