WorksheetsROTATIONAL MOTION
Total questions: 10
Worksheet time: 10mins
Two circular discs A and B have equal masses and uniform thickness but have densities ρ1 and ρ2 such that ρ1 >ρ2. their moment of inertia is
I1 > I2
I1 >> I2
I1 < I2
I1 = I2
Which is the wrong relation from the following?
τ = I α
F = ma
L = I ω
I = τ α
Angular momentum is
A scalar
A polar vector
A scalar as well as vector
An axial vector
A mass is revolving in a circle which is in the plane of the paper. The direction of angular acceleration is
Upward to the radius
Towards the radius
Tangential
At right angle to angular velocity
A dancer on ice spins faster when she folds here arms. This is due to
Increases in energy and increase in angular momentum
Decrease in friction at the skates
Constant angular momentum and increase in kinetic energy
Increase in energy an decreases in angular momentum
The M.I. of a body does not depends upon
Angular velocity of a body
Axis of rotation of the body
The mass of the body
The distribution of the body
The dimensions of angular momentum are
[M1 L2 T-1]
[M1 L1 T-1]
[M1 L1 T-2]
[M1 L2 T-2]
The moment of inertia of a disc about its geometrical axis is I. then its M.I. about its diameter will be
I
2 I
I / 2
I / 4
The term moment of momentum is called
Momentum
Force
Torque
Angular momentum
When a torque acting upon a system is zero then the quantity which remains constant is
Force
Linear impulse
Linear momentum
Angular momentum
