A) \[280\pi \,dyne\]
B) \[250\pi \,dyne\]
C) \[140\pi \,dyne\]
D) \[210\pi \,dyne\]
Correct Answer: A
Solution :
Force required, \[F=2\pi rT=2\pi \times 2\times 70=280\pi .Dyne\]You need to login to perform this action.
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