An 7.9 kg crate is pulled 5.5 m up a 30∘ incline by a rope angled 19 ∘ above the incline. The tension in the rope is 140 N and t
he crate's coefficient of kinetic friction on the incline is 0.26.
A) How much work is done by tension, by gravity, and by the normal force?
Express your answers using two significant figures. Enter your answers numerically separated by commas.
B) What is the increase in thermal energy of the crate and incline?
Express your answer using two significant figures.
A) How much work is done by tension, by gravity, and by the normal force?
Express your answers using two significant figures. Enter your answers numerically separated by commas.
B) What is the increase in thermal energy of the crate and incline?
Express your answer using two significant figures.
1 answer:
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Answer:
.7934
Explanation:
Acceleration = change in velocity / change in time
A = 10.98 / 13.84
A = .7934