What is the minimum work needed to push a 850 -kg car 750 m up along a 9.5 ∘ incline? Ignore friction. Express your answer to two significant figures and include the appropriate units.

Question

What is the minimum work needed to push a 850 -kgkg car 750 mm up along a 9.5 ∘∘ incline? Ignore friction.

Express your answer to two significant figures and include the appropriate units.

Answer 1

Force of gravity down the incline Fg = mg sin α

m = 850 kg

g = 9.81 m/s/s

α = 9.5°

Work done = Fg x d

d = 750m