Author name: Kumar Rohan

1. Concept Overview The mass and density of Earth are fundamental parameters in understanding gravitational attraction, planetary motion, and satellite

The value of acceleration due to gravity changes with height (i.e. altitude), depth or shape of the earth and rotation

Effect of Depth on Acceleration Due to Gravity If we consider a B at a depth of d below the earth surface

The radius of the Earth is more at the equator than at the poles. Due to this, the value of

1. Concept Overview The escape velocity is the minimum velocity with which a body must be projected vertically upward from

1. Concept Overview Weightlessness is the condition in which a body experiences no apparent weight — that is, the normal

1. Statement of the Laws Johannes Kepler, using Tycho Brahe’s observations, formulated three fundamental laws that describe the motion of

1. Concept Overview The gravitational force is the force of mutual attraction between any two objects that possess mass. It