Subject: Physics, asked on 25/11/11

## how do we derive the moment of inertia of rod, ring, disc, cylinder, sphere and cone?

Subject: Physics, asked on 13/11/11

## what is translatory motion?

Subject: Physics, asked on 10/10/11

## please derive the centre of mass of a solid cone and a hollow cone.

Subject: Physics, asked on 19/1/13

## what is the derivation of moment of inertia of solid cone?

Subject: Physics, asked on 31/12/13

## From a circular disc of radius R and mass 9m, a small disc of radius 3 is removed from the disc,the moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through the center O?

Subject: Physics, asked on 1/1/15

## A uniform rod of mass m and length L is placed horizontally on a smooth horizontal surface.An impulse P is applied at one end perpendicular to the length of rod.Find the velocity of centre of mass and angular velocity of rod just after the impulse is applied.

Subject: Physics, asked on 12/11/10

## difference between centre of gravity and centre of mass

Subject: Physics, asked on 28/3/13

## 50) 2 spherical bodies of mass M and 5M are of radii R and 2R respectively are released in free space with initial separation between their centres equal to 12R. If they attract each other due to gravitational force only, then the distance covered by the smaller bady just before collision is a) 1.5R b)2.5R c)4.5R d)7.5R

Subject: Physics, asked on 18/11/15

## the centre of mass of three particles of masses 1 kg ,2 kg and 3 kg lies at the point (3 m,3 m,3 m). where should a fourth particle of mass 4 kg be positioned so that the centre of mass of the four particle system lies at the point (1 m,1 m,1 m)?

Subject: Physics, asked on 12/9/12

## Q. Find the torque of a force 7i+3j-5k about the origin. The force acts as on a partical whose position vector is i-j+k .

Subject: Physics, asked on 1/12/11

## A neutron travelling with a velocity v and kinetic energy E collides elastically head on with the nucleus of an atom  of mass number A  at rest. The fraction of total  energy retained by the neutron is(A-1 / A+1)2(A+1 / A-1)2(A-1 / A)2(A+1 / A)2

Subject: Physics, asked on 19/12/14

## four point masses are placed at the corners of a square of side 2m . find the centre of mass of the system wrt to the centre of square. the masses of objects placed are 1kg,2kg.3kg and 4kg.

Subject: Physics, asked on 22/9/12

## A particle performs uniform circular motion with the angular momentum L. If the frequency of the particle motion is double and its kinetic energy is half...what happens to its angular momentum???

Subject: Physics, asked on 21/9/15

## A wheel starts from rest is uniformly accelerated at 2 rad/s^2 for 20s. It is allowed to rotate uniformly for the next 10s and is finally brought to rest in next 20s. Find the total angle rotated by the wheel in radian.

Subject: Physics, asked on 25/8/15

## A cubical block of mass m and edge a slides down a rough inclined plane of inclination theta with a uniform speed. Find the torque of normal force acting on the block about its centre.

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