The angular speed of a body is expressed in
ms-1
rad
rad s-1
N m-1
Angular momentum is
vector (axial)
vector (polar)
scalar
None of these
A constant torque acting on a uniform circular wheel changes its angular momentum from A to 4A in 4 seconds. The magnitude of this torque is
A
4 A
12 A
The dimensional representation of angular momentum is identical to that of
Planck's constant
Universal gas constant
Boltzmann's constant
Gravitational constant
A ball of mass 0.25kg attached to the end of a string of length 1.96m is moving in a horizontal circle. The string will break if the tension is more than 25 N. What is the maximum speed with which the ball can be moved?
14m/s
3 m/s
3.92 m/s
5 m/s
Choose the correct statement:
The moment of intertia of a body is a scalar
The moment of intertia is expressed in kg m-2
The moment of intertia of a body is unique.
The moment of intertia of a body can't be measured.
The dimensional representation of moment of inertia is
[ML 2T0]
[ML -2T0]
[ML 2T-2]
[ML 0T0]
The dimensional representation of angular velocity is identical to that of
frequency
time period
speed
radius of gyration
A turn -table of mass 1 kg and 34 cm in diameter is rotating about an axis passing through its centre and perpendicular to its plane and is making 45 r.p.m. what is its K.E.?
3.21 J
0.32J
0.61 J
In a rectangle ABCD (BC = 2AB). The moment of inertia is minimum alog axis through
BC
BD
HF
EG
