Posted by Bethany on .
A 1100 kg wrecking ball hangs from a 14mlong 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?

college physics 
bobpursley,
Use geometry to find out how much height it went. In my head, I see
height= 14cos17
check that
PE= mgh