Question

A simple machine overcomes a resistance of ‘L’ through a distance of 0.04 m, when a effort of 500 N is applied through a distance of 0.50 m. If the efficiency of machine is 90%, answer the following question.

The mechanical advantage of the machine is:

Options

• 11.25

• 11.20

• 11.30

• 11.15

Answer 1

11.25

Explanation:

\[ \text{VR} = \frac{\text{distance moved by effort}}{\text{distance moved by load}} \]

\[= \frac{0.50}{0.04} \]

= 12.50

MA = η × VR

= 0.90 × 12.50

= 11.25