Concept explainers
The distance by which the crate is lifted if the efficiency of the lever is
Answer to Problem 68A
Explanation of Solution
Given:
The force exerted on a lever,
The mass of the crate,
The distance upto which the force is exerted by the student,
The efficiency,
Formula used:
The efficiency of a machine is the ratio of real and idea mechanical advantages,
Where
Calculation:
The weight of the crate is,
Using the given values in above formula, the distance by which the crate is lifted (
Conclusion:
Thus, the distance by which the crate is lifted is
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