A box of mass 10 Kg, moves in circular motion with the mass function a – McqOptions

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1.	A box of mass 10 Kg, moves in circular motion with the mass function as m = 7t. The function for the radius is r = 2t2. By what factor does the centripetal force exceed the square of the tangential velocity at t = 2 s?
A.	7/4
B.	7/5
C.	7/2
D.	7
Answer» B.

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