
(a)
The angular speed of the rear wheel (
(a)

Explanation of Solution
Introduction:
To relate the angular speed of the rear wheel of the bicycle to that of pedals and front sprocket, compare the
The linear speed of the front wheel is given as,
Similarly, for the rear wheel,
The linear speed of the front wheel is equal to the linear speed of the rear wheel so, equating both the equations,
Separating the similar terms,
And given that the
The diameter of the sprocket is d and the circumference of the sprocket
Deriving the above equations
Solving both 1 and 2 equations,
Conclusion:
The ratio of the angular velocity of the rear wheel to the front wheel is
(b)
To Evaluate: The ratio of
(b)

Answer to Problem 73GP
Explanation of Solution
Given data:
The teeth on rear sprocket (
The teeth on front sprocket (
Formula used:
The relation between the ratios of the angular velocity of the rear wheel to the front wheel and the number of teeth on the rear and front is given as,
Calculation:
Substitute the values of teeth on the front
Conclusion:
The ratio of the angular velocity of the rear sprocket to the front sprocket is 4.
(c)
To Evaluate: The ratio of
(c)

Answer to Problem 73GP
Explanation of Solution
Given data:
The teeth on r0ear sprocket (
= 28
The teeth on front sprocket (
= 42
Formula used:
Calculation:
The relation between the ratios of the angular velocity of the rear wheel to the front wheel and the number of teeth on the rear and front is given as,
Substitute the values of teeth on front
Conclusion:
The ratio of the angular velocity of the rear sprocket to the front sprocket is 1.5.
Chapter 8 Solutions
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