Question

PHYSICS
ROTATIONAL DYNAMICS
3) gm
JOIN IN MAINS
SINGLE CORRECT ANSWER
The following pair of physical quantities are analogous to one another in translatory motion and
rotatory motion
1) Mass, moment of inertia
2) Force , Torque
3) Linear momentum,
Angular momentum 4) All
2. The CGS unit of radius of gyration is
1) gm/cm
2) cm
4) no unit
3. 1.1, are moments of intertia of two solid spheres of same mass about axes passing through
their centres If first is made of wood and the second is made of steel, then
1) I = I2
2) I, <I₂
3) I, >I₂
4) I, SI₂
4.
A boiled egg and a raw egg of same mass and size are made to rotate about their own axis. If
I, and I are moments of inertia of boiled egg and raw egg, then
1) I = 12
2) I, >I
3) I, <I₂
4) I, = 21,
5. Of the two eggs which have identical sizes, shapes and weights , one is raw and other is half
boiled. The ratio between the moment of inertia of the raw to the half boiled egg about central
axis is :
2) >1
3) < 1
4) not comparable
The radius of gyration of a rotating metallic disc is independent of the following physical quantity
1) =1​

Answer 1

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