1. A mass m rotates at constant speed v at a radius of R from the rotational axi
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1. A mass m rotates at constant speed v at a radius of R from the rotational axi force F provides the centripetal force Fe. If you were to double the mass m changing R or v, the force needed to keep the mass in circular motion would s. A (a) stay the same. (b) double. (c) halve. (d) quadruple. 2. A mass m rotates at constant speed v at a radius of R from the rotational axis. A force F provides the centripetal force Fc. If you were to double the radius R of the motion, without changing m or v, the force needed to keep the mass in circular motion would (a) stay the same. (b) double. (c) halve. (d) quadruple. 3. A mass m rotates at constant speed v at a radius of R from the rotational axis. A force F provides the centripetal force Fe. If you were to double the speed v of the mass, without changing m or R, the force needed to keep the mass in circular motion would (a) stay the same. (b) double. (c) halve. (d) quadruple.Explanation / Answer
1) option b is correct.
F = mv^2 /r
2)option c is correct
as r is doubled, F will be halved
3)option d is correct.
F is proportional to v^2
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