A crowbar of length 2.0 m is used as a machine to lift a box of 100 kg f by placing a fulcrum at a distance of 0.1 m from the box. Calculate the Velocity ratio

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Solution

1. Definition:
Velocity ratio:
It is the ratio of the length of the effort arm to the load arm.
Velocity ratio = $\frac{e f f o r t a r m}{l o a d a r m}$
2. Solution:
Given that,
length of the crowbar = 2m
length of the load arm = 0.1m
length of the effort arm = 2.0- 0.1 =1.9m
Velocity ratio = $\frac{e f f o r t a r m}{l o a d a r m}$ = $\frac{1.9}{0.1}$ = 19
3. Conclusion:
Hence, the velocity ratio is 19.

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