circular motion

Question 1

the angle in radians

Answer 1

arc length/radius or 2(pie) radians

Question 2

angular velocity and units

Answer 2

W(omega)=2(pie)/Time
= 2(pie)f
units- radians per second

Question 3

centripetal force

Answer 3

This force is always perpendicular to the velocity of the object.
this means that this force has no component in the direction of motion so no work is done on the object, therefore its speed remains constant
towards the centre of the circle

Question 4

centripetal acceleration

Answer 4

this is the acceleration of any object travelling in a circular path at constant speed

Question 5

investigating circular motion

Answer 5

The equipment would be a weight, string paper clip, the glass tube and mass m
as the bung is swing in a horizontal circle the suspended wieght remains stationary as long as the force it provides is equal to the centripetal force required to make the bung. travel in the circular path.
the paper clip makes this movement clear
if the centripetal force required is greater than the weight then the weight moves upwards

Question 6

sources of centripetal force

Answer 6

friction
tension
gravitational attraction