106k views
1 vote
A yo-yo spins around a circle of radius. 98m. It does 7 revolutions, and takes 21. 5 seconds. What is the yo-yo’s period?

User Skensell
by
8.1k points

1 Answer

4 votes

Given,

The radius of the circle: 98 m

Number of revolutions: 7

Total time taken: 21.5 seconds

To find,

The yo-yo's period

Solution,

To find the period, we divide the total time taken by the number of revolutions.

According to the principles of rotational motion, we get the following expression :

Period = Total time taken / Number of revolutions

(Here, all physical quantities are SI units, so no unit conversion is required.)

Period = 21.5 seconds / 7 revolutions

Period ≈ 3.07 seconds

Therefore, the yo-yo's period is approximately 3.07 seconds.

User Feryt
by
8.2k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.