7) A student of mass 75 kg rides a bicycle of mass 25kg.
The student has a habit of standing on the paddle, one
leg at a time, so ti the force of his weight drives the
bicycle. Distance between the top and the bottom
position of the pedal is 20 cm. Ratio of the paddle
wheel (bigger) and the gear (on the rear wheel is a
Radius of the rear wheel of the cycle is 50 cm. The
student takes 6 second for one ful peda (both the
legs) and spends only that much energy so that the
cycle runs continously with constant vélocity
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Answer:
Explanation:
The centripetal force acting on the bicycle is given by,
F
c
=
r
mv
2
=
100
100×10×10
=100N
Required frictional force to cross the turn,
F
f
=μmg
=0.6×100×10=600N
As the frictional force is greater than the centripetal force, so the rider will be able to cross the turn.
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