If you are using a long-handled wrench to loosen a nut from a bolt by rotating the nut in a counterclockwise fashion, the nut is more likely (easier) to turn if you apply a force _________________ (pick a Letter) a. As close to the nut as possible. b. As far away from the nut as possible. c. Really doesn’t matter where the force is applied...the same torque is generated regardless. d. Push down directly on top of the nut at an angle of 90 degrees.

Multiple choice: Why is it more difficult to push a door near the hinges? A. The moment arm is small, so greater force is required to achieve a given moment. B. You must push farther to create a large change of position away from the hinges. C. You have changed the door’s moment of inertia. D. The door has increased its kinetic energy.

A mechanic applies a force of 8N perpendicular to a 0.7m long wrench to tighten a bolt. a) How much torque does the wrench apply to the bolt? ✓✓ b) Explain a way that he could increase the amount of torque on the bolt. ✔

1. How can the same force applied to a lever produce different torques? A. By applying the force at different points of the lever arm along the length of the lever or by changing the angle between the lever arm and the applied force. B. By applying the force at the same point of the lever arm along the length of the lever or by changing the angle between the lever arm and the applied force. C. By applying the force at different points of the lever arm along the length of the lever or by maintaining the same angle between the lever arm and the applied force. D. By applying the force at the same point of the lever arm along the length of the lever or by maintaining the same angle between the lever arm and the applied force.