A ring of radius 7cm is rotating about the central axis perpendicular – McqOptions

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1.	A ring of radius 7cm is rotating about the central axis perpendicular to its plane. A force acts on it, tangentially, such that it does a work of 10J in a complete rotation. Find the value of that force. `
A.	0.5/7 N
B.	35 N
C.	500/7 N
D.	0.7 N
Answer» D. 0.7 N

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