Homework Help: physics

Posted by Mudau daisy on Tuesday, May 3, 2011 at 12:51pm.

A 3kg book is lifted to a height of 50cm above the ground
(a)by how much has the book's gravitational potential energy increased?

physics - drwls, Tuesday, May 3, 2011 at 1:16pm
gravitational P.E change = M g H
= 3.0 kg*9.8 m/s^2* 0.50 m
= 14.7 Joules

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