A) 70 m
B) 140 m
C) 110 m
D) 220 m
Correct Answer: D
Solution :
Time period = 40 sec No. of revolution\[=\frac{\text{Total time}}{\text{Time period}}\]\[=\frac{140\,\sec }{40\,\sec }=3.5\,Rev\]. So, distance\[=3.5\times 2\pi R=3.5\times 2\pi \times 10=220\,m\].You need to login to perform this action.
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