Awrecking ball has a mass of 650 kg. it swings from a cable that is 21 m long. the centripetal force on the ball is 56 n. what is the tangential speed of the wrecking ball?

1.35 m/s

Explanation:

The centripetal force on the ball is given by:

where

m=650 kg is the mass of the ball

v is the tangential speed

r=21 m is the length of the cable (which is the radius of the circular path of the ball)

F=56 N is the centripetal force

By re-arranging the equation, we can calculate the tangential speed of the ball:

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