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A lever of length 9 cm has its load arm ...

A lever of length 9 cm has its load arm 5 cm long and the effort arm is 9 cm long. (a) to which class does it belong ?
(b) Draw a diagram of the lever showing the position of the fulcrum F and directions of both the load L and effort E. (c) what is the mechanical advantage and velocity ratio if the efficiency is 100%?
(d) What will be the mechanical advantage and velocity ratio if the efficiency becomes 50%?

Text Solution

Verified by Experts

The correct Answer is:
(a) Class II
(c) M.A.=1.8, V.R.=1.8
(d) M.A.=0.9, V.R.=1.8
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