A particle of mass `m` oscillates along the horizontal diameter `AB` inside a smooth spherical shell of radius `R`. At any instant `K.E.` of the partical is `K`. Then force applied by particle on the shell at this instant is:

A particle of mass m oscillates inside a smooth spherical shell of radius R and starts its motion from point B . At given instant the kinetic energy of the particle is K . Then the force applied by particle on the shell at this instant is :-

A particle of mass M is at a distance a from surface of a thin spherical shell of equal mass and having radius a .

A point mass m is placed inside a spherical shell of radius R and mass M at a distance R/2 form the centre of the shell. The gravitational force exerted by the shell on the point mass is

A particle is given an intial soeed u inside a smooth spherical shell of radius R so that it is justable to compelte the circle. Acceleration of the particle, when its velocity is vertical, is

A ball of mass m inside a smooth spherical shell of radius R with velocity sqrt(2qR) at A What is the direction of force acting on the ball, when it reaches B ?

A particle of mass m is located inside a spherical shell of mass M and radius R. The gravitational force of attraction between them is

A particle of mass m is placed at the centre of a unifrom spherical shell of mass 3 m and radius R The gravitational potential on the surface of the shell is .

A particle is given an initial speed u inside a smooth spherical shell of radius R=1 m such that it is just able to complete the circle. Acceleration of the particle when its velocity is vertical is

A particle of mass m oscillates inside the smooth surface a fixed pipe of radius R . The axis of the pipe is horizontal and the particle moves from B to A and back. At an instant the kinetic energy of the particle is K (say at position of the particle shown in figure ). Then choose the correct value of force applied by particle on the pipe at this instant.