Circular Motion Flashcards
1
Q
Define angular displacement
A
Angle an object makes with respect to a reference time
2
Q
Define radian
A
Angle subtended by an arc length equal to the radius of the arc
3
Q
Define angular velocity
A
Rate of change of angular displacement with respect to time
4
Q
Use Newton’s laws of motion to explain why a body moving with uniform speed in a circle must experience a resultant force
A
Resultant force:
By N1L, body is not moving in a straight line but in a circular path, so there must be a resultant force to change its direction. Direction of motion is constantly changing -> must have an acceleration. N2L -> body must experience a resultant force in the same direction as the acceleration.
