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A bicycle has pedal rods of length 16 cm...

A bicycle has pedal rods of length `16 cm` connected to sprocketed disc of radius `10 cm`. The bicycle wheels are `70 cm` in diameter and the chain runs over a gear of radius `4cm`. The speed of the cycle is constant and the cyclist applies `100 N` for, that is always perpendicular to the pedal rod, as shown in figure. Assume tension in the lower part of chain is negligible. The cyclist is peddling at a constant rate of two revolutions per second. Assume that the force applied by other foot is zero when one foot is exerting `100 N` force. Neglect friction within cycle parts and the rolling friction.

The speed of the bicycle is

A

`6.4pi" m/s"`

B

`3.5pi" m/s"`

C

`2.8pi" m/s"`

D

`5.6pi" m/s"`

Text Solution

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The correct Answer is:
B
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