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How much work is done by the gravitational force when a 256 kg pile driver falls 2.80m?
Wiki User
∙ 12y ago
work is not by the force . work is done by the body against or for the force. since work is force x displacement it will be 265x2.40 =636 N .and since work is done for the gravity work done will be -ve so it will be -636 N .
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoThe work is W=F.H = - mgh = - 256x9.8x2.8 = -7024.64 Joules. The sign is negative as this work, exergy,is work out. When the force and the displacement is in the same direction, the work is exergy and when the displacement is opposite the force the work is input energy and the sign is positive.
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