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An athlete swings a 3.90-kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.840 m at an angular speed of 0.670 rev/s.
(a) What is the tangential speed of the ball?
m/s
(b) What is its centripetal acceleration?
m/s2
(c) If the maximum tension the rope can withstand before breaking is 88 N, what is the maximum tangential speed the ball can have?
A rock of mass m = 1.0 kg is tied to a string of length L = 1.9 m and is twirled in a vertical circle. The speed v of the rock is constant; that is, it is the same at the top and the bottom of the circle. If the tension in the string is zero when the..
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