Question

helppp

Answer 1

this is the question

Answer 2

Work done by the car in moving distance 's' = Input energy = F *s

Gain in potential energy =Output energy = mgs sin alpha

Efficiency = output/input = mgsin alpha/F

Answer 3

I actually got to understand till that point but my question is why is that you are multiplying the weight with the angle?

Answer 4

for the output energy I mean

Answer 5

gain in potential energy = mass * height * g

Answer 6

Ohh ok and the input?

Answer 7

isnt it work done? (f x d)?

Answer 8

wait Gpe= mgh this is what u r using?

Answer 9

correct = f*s

Answer 10

why F*s is input but not output?

Answer 11

gooot it :D

Answer 12

thnx!! @thushananth01

Answer 13

:)