A 1000 kg wrecking ball hangs from a 15m long cable. The ball is pulled back until the cable makes an angle of 25 degrees with the vertical. a) By how much has the gravitational potential energy of the ball changed? b) If the operator releases the ball and it swings in an arc on the cable, how fast will it be moving as it passes the bottom of the arc?
A 1000 kg wrecking ball hangs from a 15m long cable. The ball is pulled back until the cable makes an angle of 25 degrees with the vertical. a) By how much has the gravitational potential energy of the ball changed? b) If the operator releases the ball and it swings in an arc on the cable, how fast will it be moving as it passes the bottom of the arc?
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A 1000 kg wrecking ball hangs from a 15m long cable. The ball is pulled back until the cable makes an angle of 25 degrees with the vertical.
a) By how much has the gravitational potential energy of the ball changed?
b) If the operator releases the ball and it swings in an arc on the cable, how fast will it be moving as it passes the bottom of the arc?
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