1: A bolt on a car engine is to be tightened with a torque of 35 Newton meters. If you have a 25 cm long wrench, what force should you exert?
1.4 N
1.4 x 102 N
8.8 N
8.8 x 10-1 N
2: Two disks have the same mass, but one (designated as D) has twice the diameter of the other (designated as d). Which would be harder to start rotating?
D
d
They are equally hard to rotate
Not enough information given
3: Angular acceleration is the rate of change of:
Linear displacement
Angular displacement
Linear velocity
Angular velocity
4: What is the angular velocity in rad/sec of the tip of a second hand of a watch?
1 rad/sec
6 rad/s
0.60 rad/sec
0.10 rad/sec
5: The direction of the rotation of a spinning object can be changed only by applying a(n) ______.
Force
Torque
Velocity
None of the Above
6: To relate the Angular momentum of a particle with its linear momentum, you need the particle’s:
Displacement from the origin
Distance from the origin
Velocity vector
Torque
7: Mass is an analogous linear quantity to the angular form of:
Weight
Torque
Inertia
Acceleration
8: As a gyroscope slows down due to friction, the rate of precession increases due to:
The direct relationship between angular momentum and precession
The inverse relationship between inertia and angular acceleration
The direct relationship between torque and angular acceleration
The inverse relationship between angular momentum and precession
9: The heavy rim around a Frisbee is useful because it gives it:
A large moment of inertia
A small moment of inertia
A decrease in the gyroscopic effect
An increase in it’s precession
10: An object moving in a circle at constant speed has:
No acceleration
Acceleration tangent to the circle
Acceleration towards the center of the circle
Acceleration away from the center of the circle
2007-12-13
06:50:35
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2 answers
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asked by
Anonymous
in
Science & Mathematics
➔ Physics