Question

When the lighter object of 50g is in circular motion, which force is needed for the circular path of radius 20 cm at frequency 20/rt Hz?​

Answer 1

Answer:

2F

Frequency is constant, thus its angular velocity is constant       w=2πf

Initial centripetal force        F=mr1w12      

But radius is doubled     r2=2r1

∴ New centripetal force        F2=mr2w2=m(2r1)w2=2F

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