When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by:
Correct answer: B. Tension in the string
- A. Mass of body
- B. Tension in the string
- C. Velocity of body
- D. Centripetal acceleration
Explanation
Therefore, the correct answer is option B: Tension in the string. The centripetal force required to keep the body moving in a horizontal circle is supplied by the tension in the string, which acts as an inward force, pulling the body towards the center of the circle.
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About Angular and Linear Quantities
Rotational motion relates angular displacement, angular velocity and angular acceleration to linear displacement, tangential velocity and tangential acceleration through the radius. Questions use radians, v equals r omega and tangential acceleration, while distinguishing tangential velocity from centripetal acceleration and angular quantities from their linear counterparts.
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