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Problem Solving

A porter gove...

Question

A porter governor has a maximum and minimum
equilibrium speeds of 250 rpm and 200 rpm respectively. If effective load on the sleeve is 400 N, the governor effort would be

A

250 N

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B

200 N

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C

400 N

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D

100 N

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Solution

The correct option is D 100 N
Effort is mean force exerted at sleeve for a given percentage change in speed
$Effort = 400 \times (\frac{250 - 200}{200}) = 100 N$

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