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Question

How much work is done by the gravitational force when a 260 kg pile driver falls 2.30 m? 

Express your answer using three significant figures.

Answer 1

Given :

mass (m) = 260 kg

distance (d) = 2.30 m

F_N - F_g = 0

F_N = F_g

F_N = mg = (260kg) (9.80m/s²) = 2548 N

W=F_Ndcosθ

W=(2548 N)(2.30m)(cos(0))

W=5860.4J

W=5.864 x10³J