torques and moments of force Flashcards
1
Q
define torque
A
defined as a force that is rotational
2
Q
define centric force
A
a force that acts through the center of a body, causes translation (linear motion)
3
Q
define eccentric force
A
a force whose line of action does not pass through the center of the body
- causes both translation and rotation
4
Q
define couple
A
two equal and opposite forces
- only causes rotation
5
Q
what is translation?
A
Linear motion
6
Q
What is a motive torque?
A
motive torque moves the lever, it tends to be the muscle contracting
CREATES MOVEMENT
7
Q
What is resistive torque?
A
resistive torque resists the rotation of the lever, it is usually the load or weight but could be the muscle contraction.
8
Q
What is muscular torque?
A
Muscle creates a force that pulls on the attachement site
