Question

two Gear wheels mesh together. One gear has 20 teeth and the other gear has 25 teeth. If the larger wheel makes 75 revolutions per minute, how many revolutions per minute does the smaller wheel make.​

Answer 1

The smaller wheel makes 93.75 revolutions per minute when the larger wheel is making 75 revolutions per minute.

We are given that:

The larger gear wheel has 25 teeth and the smaller gear wheel has 20 teeth.

The ratio of the wheel is 25 : 20

5 : 4

1.25 : 1

This means that when the larger wheel makes 1 revolution, the smaller wheel makes 1.25 revolution.

Now, we have that 75 revolutions per minute is made by the larger wheel.

So, the number of revolution made by the smaller wheel will be:

Number = 75 × 1.25

Number = 93.75 revolutions

Therefore, the smaller wheel makes 93.75 revolutions per minute when the larger wheel is making 75 revolutions per minute.

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