What are the differences between the mass of an object and its weight?
|1.||Mass is the quantity of matter contained in the body.||Weight is the force of gravity acting on the body.|
|2.||It is the measure of inertia of the body.||It is the measure of gravity.|
|3.||Mass is a constant quantity.||Weight is not a constant quantity. It is different at different places.|
|4.||It only has magnitude.||It has magnitude as well as direction.|
|5.||Its SI unit is kilogram (kg).||Its SI unit is the same as the SI unit of force, i.e., Newton (N).|
A stone is thrown vertically upwards with a speed of 20 m/s. How high will it go before it begins to fall ? (g =8 m/s2)
Calculate the acceleration due to gravity on the surface of a satellite having a mass of 7.4 x 1022 kg and a radius of 1.74 x 106 m (G = 6.7 x 10-11 Nm2/kg2). Which satellite do you think it could be ?
- null - Mass and Weight