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MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
MCQ Questions for CBSE Class 5 with Answers
MCQ Questions for CBSE Class 4 with Answers
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MCQ Questions for CBSE Class 1 with Answers
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Uniform Circular Motion Class 12 MCQ Questions With Answers
1.
Which of the following is a tangent to the point on the circle?
A
A & B
A, B & D
C
2.
Uniform circular motion is an accelerated motion
True
False
Don't Know
3.
In a uniform circular motion
velocity is constant
acceleration is constant
speed is constant
All of the above
4.
A pilot experiences centripetal acceleration of 2g's while maneuvering a loop at a speed of 400 m/s. What is the radius of the loop? (1g =9.8 m/s2)
203 m
8163 m
80,003 m
23 m
5.
Which of the following depict the speed/velocity of the moving ball?
A
B
C
D
6.
Suppose the speed of the car is 11.1 m/s and the radius of curvature (r) is 25 m; determine the magnitude of the centripetal acceleration.
5 m/s/s
0.2 m/s/s
15.8 m/s/s
11 m/s/s
7.
Two bugs ride a turntable which is rotating at a constant rate of 4 rad/s. Bug A is at a radius of 4 cm, while bug B is at a radius of 8 cm. Which of the following is true?
Bug A has a greater angular velocity
Bug B has a greater angular velocity.
Bug A has a greater linear velocity.
Bug B has a greater linear velocity.
8.
The wheels of a car have radius 0.330 m. and are rotating at 600.0 rpm. Determine the speed of the car in miles/hour to the nearest tenth. (Determine ω (angular velocity) first and then use v=ω⋅r and convert to km/hour)
11.88 km/hour
685.4 km/hour
74.64 km/hour
74640 km/hour
9.
A car moving around a curve at a constant speed of 150 mph is accelerating.
True, because it is moving at a constant speed.
True, because it is changing direction.
False, because it is not a constant velocity.
False, because it is moving at a constant speed.
10.
A car makes a left turn, a book on the front seat slides to the right...why?
centripetal acceleration of the book
centripetal force of the book
will power
inertia of the book
11.
Acceleration causes a change in velocity so acceleration can cause
a change in speed only.
a change in speed or direction.
a change in direction only.
12.
What would act as the centripetal force for a car on a circular track?
Friction
Gravitation
Tension
None of These
13.
Determine the central angle if the arc length is 10 cm and the radius is 5 cm. Convert to degrees.
2°
not possible ... "s" is too small
≈ 114.6°
360°
14.
Centripetal acceleration acts towards the ___________ of the circular motion
centre
circumference
15.
A rubber stopper on the end of string is swung steadily in a horizontal circle. In one trial, it moves at speed v in a circle of radius r. In a second trial, it moves at a higher speed 3v in a circle of radius 3r. In the second trial the acceleration is
the same as in the first trial
three times larger
one-third as large
nine times larger
One-ninth as large.
16.
A car travels clockwise at a constant speed around the oval track shown. What is the direction of the velocity vector for point W?
A
B
C
D
E
17.
A car on an oval track starts from rest at point R and moves clockwise around the track. It increases speed at a constant rate until it reaches point T then travels at a constant speed until it returns to point R. What is the direction of the velocity vector at point S?
A
B
C
D
E
18.
An object in uniform circular motion is (choose all that apply)
traveling at a constant speed
accelerating
not accelerating
moving in one direction
Both A & B
19.
Determine the angular velocity in rad/min of a gyroscope rotating at 6 rps (revolutions per second). Leave answer in terms of π.
360π rad/min
12π rad/min
360 rad/min
720π rad/min
20.
A spin balancer rotates the wheel of a car at 500 revolutions per minute. What is the angular speed in degrees per second?
16.67 deg / sec
6,000 deg / 1 sec
3,000 deg / 1 sec
180,000 deg / 1 sec
21.
A specific vehicle can go around a curve with a radius of 150 m with a maximum speed of 32 m/s without sliding off the road. To have the same acceleration, at what maximum speed can the same vehicle go around a curve having a radius of 75 m?
64 m/s
45 m/s
32 m/s
23 m/s
16 m/s
22.
A horse gallops around a circular arena. The centripetal force on the horse is ___.
directed outward
tension
directed toward the center of the arena
9.8 N
23.
The mints rotating on top of the turntable all have the same tangential velocity.
True
False
24.
For an object to be in uniform circular motion the direction of the acceleration is
perpendicular to the direction of travel.
parallel to the direction of travel.
diagonally inwards between the direction of travel and the center of the circle.
diagonally outwards away from the center of the circle but in the same direction of travel.
diagonally inwards towards the center of the circle but opposite to the direction of the velocity.
25.
A ceiling fan with 16 inch blades rotates at 45 rpm. Find the angular velocity of the fan in rad/min. Round to the nearest tenth.
90 rad/min
282.7 rad/min
45 rad/min
141.4
26.
A 3.0 N centripetal force acts on a toy car, if the car's mass is doubled then the force is... ΣFnet = mv2r\Sigma F_{net}\ =\ \frac{mv^2}{r}ΣFnet = rmv2
3.0 N
6.0 N
9.0 N
1.5 N
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