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JAMB Physics 2015 Paper

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Question : 35

Total: 66

If the mechanical advantage of a machine is 4. What is its ratio for LOAD to EFFORT?

4:01
1:04
5:01
2:01

Solution:

Concept:

Mechanical advantage is the ratio of load to effort.

Explanation:

Mechanical advantage (M.A) is given by:

M.A = \frac{\text{Load}}{\text{Effort}}

This means

M.A = \frac{L}{E}

where

L

is load and

E

is effort.

If

M.A = 4

, then we can write:

\frac{L}{E} = \frac{4}{1}

Therefore, the ratio of load to effort is

4:1

.

Answer:

A.

4:1

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