motion in a circle Flashcards
1
Q
radian
A
angle subtended at the centre of the circle by an arc equal to the length of the radius
2
Q
angular displacement
A
ratio of arc length to radius of the circle
3
Q
angular velocity
A
rate of change of angular displacement
4
Q
for an object in circular motion, why does acceleration increase when speed remains constant?
A
the direction of the resultant force is perpendicular to the direction of motion/displacement. thus, work done on object is 0 and KE remains constant.
