Mahendra and Virat are sitting at a distance of 1 metre from each other. Their masses are 75 kg and 80 kg respectively. What is the gravitational force between them? Differentiate between mass & weight.
Answers
Answer:
The gravitational force between Mahendra and Virat is 4.002 x 10-7
Explanation:
r = 1 m, m1 = 75 kg, m2 = 80 kg and G = 6.67 x 10 -11 Nm2/kg2 According to Newton’s law,
F = G× m1 × m2/r^2
=6.67×10^-11 × 80× 75/ 1^2
=4.002 × 10^-7
Difference between Mass and weight.
Mass is a property of matter. The mass of an object is the same everywhere.
Weight depends on the effect of gravity. Weight increases or decreases with higher or lower gravity.
Mass can never be zero.
Weight can be zero if no gravity acts upon an object, as in space.
Mass does not change according to location. Weight varies according to location.
Mass is a scalar quantity. It has magnitude.
Weight is a vector quantity. It has magnitude and is directed toward the center of the Earth or other gravity well.
Mass may be measured using an ordinary balance.
Weight is measured using a spring balance.
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