Question

Gravitational force acts on a particle due to fixed uniform solid sphere. Neglect other forces. Then particle

• A. always moves normal to the radial direction
• B. always moves in the radial direction only
• C. always moves in circular orbit
• D. experiences a force directed along the radial direction only

Answer 1

The correct option is D experiences a force directed along the radial direction only

Circular motion is a special case in gravitational field. These may be straight line, elliptical paths, but force will be always directed towards at the centre of the sphere.