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oksano4ka [1.4K]
3 years ago
11

a plane inclined at an angle of 30° to the horizontal has an efficiency of 50%. the force parallel to the plane required to push

a load of 120N uniformly up the plane is?​
Physics
1 answer:
Nutka1998 [239]3 years ago
3 0

Answer:

Correct Answer: Option B

Explanation

V.R = 1sinθ=1sin30=21sinθ=1sin30=2

M.A = E×V.R100=50×2100=1E×V.R100=50×2100=1

Effort = loadM.A=1201=120N

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