In a simple lifting machine an effort of 500 N raised a
load of 12.5 kN. What is the mechanical advantage ? If
the machine has an efficiency of 65%, what is the
velocity ratio ?
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Explanation:
Distance moved by effort is 20m,that of load is 0.8m
VR=
L
d
E
d
VR=
0.8
20
VR=25
the load is 10,000N and effort=500N
MA=
effort
d
load
d
MA=
500
10000
MA=20
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