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PhysicsQ&A Library8 A ball of mass M at the end of a string is swung in a horizontal circular path of radius R at con- stant speed V. Which combination of changes would require tripetal force acting on the ball? (1) doubling V and doubling R (2) doubling. V and halving R (3) halving V and doubling R (4) halving V and halving R the greatest increase in the cen- .Question

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