college physics

A 1100 kg wrecking ball hangs from a 14m-long cable. The ball is pulled back until the cable makes an angle of 17.0 degrees with the vertical.By how much has the gravitational potential energy of the ball changed?

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  1. Use geometry to find out how much height it went. In my head, I see

    height= 14cos17

    check that

    PE= mgh

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