(I) A 58-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.


(b) How could she exert more torque?

(I) A 58-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?

(II) A potter is shaping a bowl on a potter’s wheel rotating at constant angular velocity of 1.6 rev/s (Fig. 10–59). The friction force between her hands and the clay is 1.8 N total.

(a) How large is her torque on the wheel, if the diameter of the bowl is 9.0 cm? The moment of inertia of the wheel and the bowl is 0.11 kg • m².

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(II) A particle is located at r → ( 5.0î + 3.5ĵ + 6.0k̂)m. A force F→ = (8.0ĵ - 4.0k̂) N acts on it. What is the torque, calculated about the origin?