A ball is whirled at the end of a string in a horizontal circle at 0.60m in radius at the rate of 0.5Hz. Find the ball's speed and centripetal acceleration. Please help!!

The slope of a velocity time graph over any interval of time gives the during that interval

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.

Aheavy piece of hanging sculpture is suspended by a90-cm-long, 5.0 g steel wire. when the wind blows hard, the wire hums at its fundamental frequency of 80hz. what is the mass of the sculpture?