-20- N16/4/PHYSI/HP3/ENG/TZ0/XX (Option B continued) .12. The diagram shows two methods of pedalling a bicycle using...

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-20- N16/4/PHYSI/HP3/ENG/TZ0/XX (Option B continued) .12. The diagram shows two methods of pedalling a bicycle using a force F. Method 1 crank arm Method 2 crank arm [2] 121 In method 1 the pedal is always horizontal to the ground. A student claims that method 2 is better because the pedal is always parallel to the crank arm. Explain why method 2 is more effective. ma The...method. 2. is more effective because ... j... J. ko... d. ame... frive...nd. The arcis. a.f...... sotation. And then there is no. torque. them less work...to do...... and. -20- N16/4/PHYSI/HP3/ENG/TZ0/XX (Option B continued) .12. The diagram shows two methods of pedalling a bicycle using a force F. Method 1 crank arm Method 2 crank arm [2] 121 In method 1 the pedal is always horizontal to the ground. A student claims that method 2 is better because the pedal is always parallel to the crank arm. Explain why method 2 is more effective. ma The...method. 2. is more effective because ... j... J. ko... d. ame... frive...nd. The arcis. a.f...... sotation. And then there is no. torque. them less work...to do...... and.