What is outward force acting on a mass of 10kg when rotating at one end on an inelastic string 10m long at speed of 1m/s?
Correct answer: A. 1N
- A. 1N
- B. 2N
- C. 10N
- D. 100N
Explanation
1N is the correct answer. The centripetal force is determined by the formula Fc = mv2 / r, where m=10kg, v=1m/s, and r=10m. Plugging in these values gives Fc = (10 kg)(1 m/s)2 / 10 m = 1 N. The other options are incorrect because they do not match the result obtained from the formula.
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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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