1. Torque

2. Rotational Force? All net forces do not cause rotation.
What does the amount of rotation depend on ?
How can rotational force be maximized?
It depends on the magnitude, angle oand location of the force
How do we calculate it?

3. Torque Torque is to rotational motion as force is to linear motion.
Torque is given the Greek symbol capital tau (τ)

4. Torque Is greater with a greater force
Is greater if the force is applied farther from the axis or rotation.
Is greater if the angle of application of the force is perpendicular to the radial line.

5. General Direction of Cross Product: The RHR
Point the fingers of your right hand in the direction of vector A.
Close your fingers into the direction of vector B.
Your thumb points in the direction of vector C.

6. Torque

7. Torque and Lever arm or Moment Arm

8. How much Torque does Luis Provide?

9. τe>τa=τd>τb>τc
Rank the Torques
τe>τa=τd>τb>τc

10. Analog to Newton’s 2nd Law
No Change in motion (no acceleration)
No Change in rotation
EQUILIBRIUM

11. Three types of motion of a rigid body:

12. Center of mass is relative to the axis of rotation
Torque due to gravity
Center of mass is relative to the axis of rotation

13. Torque due to gravity
The gravitational torque is found by treating the object as if all its mass were concentrated at the center of mass.

14. What is the torque on the 500kg steel beam?

15. What is the torque on the 500kg steel beam?

16. What is the torque on the 500kg steel beam?

17. Wheel & Axil

18. Torque on Wheels & Gears

19. Equilibrium Challenge: