A tunnel is dug along a diameter of the earth. Find the force on a particle of mass m placed in the tunnel at a distance x from the centre.

Q. A tunnel is dug along a diameter of the earth. Find the force on a particle of mass $m$ placed in the tunnel at a distance $x$ from the centre. (Here $M_e\text{and}{R}_e$ are the mass and radius of earth)

Q. A tunnel is dug along a diameter of earth. The force on a particle of mass $m$ and distance $x$ from the centre in this tunnel will be :

Q. A tunnel is dug along a diameter of the earth. If $M_e$ and $R_e$ are the mass and radius, respectively, of the earth, then the force on a particle of mass $m$ placed in the tunnel at a distance $r$ from the centre is :

Q. A tunnel is dug along a diameter of the earth. If $M_e$ and $R_e$ are the mass and radius of the earth respectively , then the force on a particle of mass $m$ placed in the tunnel at a distance $r$ from the centre is :

[Assume , walls of the tunnel are frictionless]

Q. A tunnel is dug along a chord of the earth at a perpendicular distance $\frac{R}{3}$ from the earth's centre. Assume wall of the tunnel is frictionless. Find the force exerted by the wall on mass m at a distance x from the centre of the tunnel