24. (I) A 52-kg person riding a bike puts all her weight on each pedal when climbing a hill. The pedals rotate in a circle of radius 17 cm. (a) What is the maximum torque she exerts? (b) How could she exert more torque?

24. (I) A 52-kg person riding a bike puts all her weight on each pedal when climbing a hill. The pedals rotate in a circle of radius 17 cm. (a) What is the maximum torque she exerts? (b) How could she exert more torque?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section8.2: Rotational Dynamics

Problem 17PP

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Can i get help with these problems

24. (I) A 52-kg person riding a bike puts all her weight on each
pedal when climbing a hill. The pedals rotate in a circle of
radius 17 cm. (a) What is the maximum torque she exerts?
(b) How could she exert more torque?
25. (II) Calculate the net torque about the axle of the wheel
shown in Fig. 8-42. Assume that a friction torque of
0.60 m N opposes the motion.
35 N
28 N
1350
12 cm
24 cm
18 N
FIGURE 8-42 Problem 25.

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