Question

A load is lifted with the help of a pulley as shown in the given figure.
Calculate
100N
GON
i)
ii)
iii)
MA of the pulley
Efficiency
How much percentage of energy is wasted while lifting the
load?
[Ans: MA = 0.8, n = 80%, 20%]​

Answer 1

Distance moved by effort is 20m,that of load is 0.8m

VR=Ed/Ld

VR= 20/0.8

VR=25

the load is 10,000N and effort=500N

MA=load d/effort d

MA= 10000/500

MA=20

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