WorksheetsQuiz 1: Circular motion
Total questions: 20
Worksheet time: 13mins
In uniform circular motion, the magnitude of the _______________________of an object is constant but the __________ is continually changing.
Speed, acceleration
Speed, direction
Acceleration, speed
Acceleration, velocity
Which statement is true about an object that is traveling in uniform circular motion?
The speed of the object varies.
The net force on the object is directed toward the center of the circular path.
The direction of the object's velocity is constant.
The net force on the object is directed away from the center of the circular path.
Centripetal acceleration always points
in the direction of the object's motion
in the opposite direction of the object's motion
towards the center of the circle
towards the outside of the circle
________________________ defined as the number of revolutions (cycles/rotations) completed in one second.
frequency
period
distance
centripetal acceleration
Which of the following is the unit for centripetal force?
J
m/s2
kg⋅m/s
N
The time taken for one complete revolution is called the...
Period
Frequency
Angular velocity
Which represents the acceleration of the ball?
A
B
C
D
If an object is spinning around on a string and the string was suddenly cut, the object would move in a
curved path
straight line
The _______________________ supplies the centripetal force requirement for the car to move in a horizontal circle.
friction force
centrifugal force
normal force
applied force
What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?
5 m/s2
17.63 m/s2
10 m/s2
8.81 m/s2
A ball on a string is spun around in a circle. Which of the following quantities is not constant?
mass
force
velocity
acceleration
What is the relationship between centripetal force and the mass of an object?
direct
inverse
exponential
inverse squared
Which of the following increase the centripetal force?
Increasing the radius
Increasing the velocity
Decreasing the mass
Decreasing the acceleration
A car with mass m travels around a curve with velocity v. What do you know about the centripetal force if the radius triples?
Force doubles
Force triples
Force divides by 3
Force divides by 9
The relation between angular velocity and linear velocity is
v = r ω
v = r/ ω
ω = r v
ω = r/v
The relation between angular acceleration and linear acceleration
a = r/ α
α = r a
a = r α
α = r/a
Calculate the linear velocity of a particle moving along a circle of radius 0.21m with angular velocity 22 rad/s.
5.23 m/s
4.62 m/s
2.46 m/s
6.42 m/s
Find the linear acceleration of a particle moving along a circle of radius 2 m with angular acceleration 12.56 rad/s2
25.12 m/s2
52.12 m/s2
45.23 m/s2
16.23 m/s2
A car weighing 1500 kg takes a round turn of 100 m radius with velocity 7 m/s. The centripetal force is
735 N
235 N
345 N
534 N
A particle moves in a circle of radius 20 cm with speed 10 m/s. Find its angular velocity.
50 rad/s
40 rad/s
60 rad/s
45 rad/s
