Write the formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth.
Gravity of earth attracts every object towards its center. When an object is dropped from a certain height , it begins to fall towards Earth’s surface under the influence of gravitational force. Such a motion of object is called free fall.
When an object falls freely towards the surface of earth from a certain height, then its velocity changes. This change in velocity produces acceleration in the object which is known as acceleration due to gravity denoted bu letter g . The value of acceleration due to gravity is g= 9.8 m/s2.
|Mass is the quantity of matter contained in the body.||Weight is the force of gravity acting on the body.|
|It is the measure of inertia of the body.||It is the measure of gravity|
|Mass is a constant quantity.||Weight is not a constant quantity. It is different at different places.|
|It only has magnitude.||It has magnitude as well as direction.|
|Its SI unit is kilogram (kg)||Its SI unit is the same as the SI unit of force, i.e., Newton (N)|