Question

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%?​

Answer 1

Answer:

class 2 lever

mechanical advantage is more then one that is 1.8 (same for velocity ratio)

if efficiency is 50 percent then ma is 0.9

Explanation:

the diagram is not perfect

Answer 2

(a) class 2

(c) m.a. = 1.8

v.r.= 1.8

(d) m.a.= 0.9

v.r.= 1.8

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