Chapter # 4 Turning effect of Forces

Turning effect of Forces

Quiz

 

1. What is the term for the turning effect produced by a force?
   1.   Moment
   2.   Torque
   3.   Lever arm
   4.   Couple
2. The perpendicular distance from the pivot point to the line of action of the force is called:
   1.   Moment arm
   2.   Lever arm
   3.   Radius
   4.   Fulcrum
3. Which of the following units is used to measure torque?
   1.   Newton
   2.   Joule
   3.   Newton-meter
   4.   Pascal
4. If a force of 10 N is applied at a distance of 0.5 meters from the pivot, what is the torque produced?
   1.   5 N-m
   2.   10 N-m
   3.   20 N-m
   4.   50 N-m
5. Which of the following conditions is necessary for an object to be in equilibrium?
   1.   Net force is zero
   2.   Net torque is zero
   3.   Both net force and net torque are zero
   4.   Net velocity is zero
6. The point about which an object rotates is called:
   1.   Fulcrum
   2.   Pivot
   3.   Axis
   4.   Center of gravity
7. What is the effect of increasing the distance from the pivot on the torque produced by a given force?
   1.   Decreases the torque
   2.   Increases the torque
   3.   No effect on the torque
   4.   Doubles the force
8. What is the term for the tendency of a force to cause rotation?
   1.   Equilibrium
   2.   Inertia
   3.   Torque
   4.   Momentum
9. In a balanced seesaw, the torques on both sides are:
   1.   Unequal
   2.   Equal
   3.   Zero
   4.   Negative
10. A seesaw is an example of which type of lever?
    1.   First-class
    2.   Second-class
    3.   Third-class
    4.   Fourth-class