WorksheetsCircular Motion
Total questions: 8
Worksheet time: 37mins
A particle moving in a circular path completes 7.5 revolutions in 9.0 s. Its angular velocity in rad s-1 is
0.83
5.2
68
420
A disc of diameter D is turning at a steady angular speed at frequency f about an axis through its centre.
What is the centripetal force on a small object O of mass m on the perimeter of the disc?
2πmfD
2πmf2D
2π2mf2D
2πmf2D2
The picture is of a child’s spinning top.
The spinning top has a diameter of 22 cm and spins at a rate of 6.5 revolutions per second. The speed of a point on the outer edge of the spinning top is
0.11 m s-1
0.21 m s-1
4.5 m s-1
9.0 m s-1
What is the angular speed of a car wheel of diameter 0.400 m when the speed of the car is 108 km h-1
75 rad s-1
150 rad s-1
270 rad s-1
540 rad s-1
A model car moves in a circular path of radius 0.8 m at an angular speed of 2π rad s−1 . What is its displacement from point P, 6 s after passing P?
zero
1.6 m
0.4 π m
1.6 π m
The drum of a washing machine rotates with an angular velocity of 8.5 rad s-1.
The time taken for the drum to complete 10 revolutions is
0.85 s
1.3 s
3.7 s
7.4 s
A playground swing completes 24 oscillations in 1 minute.
Which of the following is the frequency of the oscillations?
0.042 Hz
0.40 Hz
2.5 Hz
24 Hz
The diagram shows a disc of diameter 120mm that can turn about an axis through its centre.
The disc is turned through an angle of 30° in 20 ms. What is the average speed of a point on the edge of the disc during this time?
0.5π m s-1
π m s-1
1.5π m s-1
2π m s-1
