Physics

Grade-10

Easy

Question

# A boy is sitting in a merry-go-round. The time period of circular motion is 5 sec, and its speed of rotation is 70 m/s. What is the radius of the circle formed?

- 5.573 m
- 55.73 m
- 557.3 m
- 5573 m

Hint:

### Using the formula of

## The correct answer is: 55.73 m

### Time period, T = 5 s

Speed , v = 70 m/s

According to formula,

m

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