1. MECHANICAL SYSTEMS Torque & Levers (P .81-86)
SPH4C COLLEGE PHYSICS
MECHANICAL SYSTEMS
Torque & Levers (P )

2. Torque & Levers

3. Torque & Levers

4. Torque & Levers

5. Torque & Levers

6. Torque & Levers

7. Torque & Levers PRACTICE
1. A mechanic applies a force of magnitude 540 N perpendicular to a wrench to loosen a nut. Calculate the magnitude of the torque if the distance from the applied force to the nut is:
(a) 0.30m
T=162 Nm
(b) 0.50m
T=270 Nm

8. Torque & Levers PRACTICE
2. A person applies a force of magnitude 150 N at the hinge side of a door, which means that “d” is zero. What is the magnitude of the torque produced on the door?
T=0 (since d=0)

9. Torque & Levers PRACTICE
3. A cyclist is signalling with one hand and turning the handlebar to turn a corner with the other. The cyclist applies a force of magnitude 4.5 N at 90° to the handlebar, which produces a torque of magnitude 0.99 N⋅m on the handlebar. Calculate the distance from the fulcrum to the applied force.
d = 0.22 m

10. Torque & Levers PRACTICE
4. A corral gate is partly open. A cow hits the gate with her head at a distance of 3.6 m from the hinges. If the torque produced by the cow has a magnitude of 540 N⋅m, what force did the cow apply to the gate? (Assume that the force is perpendicular to the gate.)
F = 150 N

11. Torque & Levers
5. If a wrench is unable to loosen a wheel nut, how can you use a hollow pipe to increase the torque provided by the wrench?
put the pipe on the end of the wrench (increases d which increases T)

12. Torque & Levers
TEXTBOOK
P .83 Q.3-7