A lever allows a 35 N load to be lifted with a force of 7 N. What is the mechanical advantage of the lever?

Question

Physics

Roy Weber

Today, 04:46

A lever allows a 35 N load to be lifted with a force of 7 N. What is the mechanical advantage of the lever?

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Answers (1)

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Malcolm Strong · Answer 1

Answer: MA = 5

Explanation:

The mechanical advantage is the ratio of the load to the effort. It is a measure of how efficient a simple machine is.

MA = Load/Effort

Load = 35N

Effort = 7N

Therefore

MA = 35N/7N

MA = 5

Since the mechanical advantage is more than 1, the lever is highly efficient as it allows a very small effort to overcome 5 times its magnitude of load.