Question

(a) Write two difference between mass and weight.
(b) Find the weight in newton of a 10 kg object on the moon

Answer 1

A). Difference Between Mass And Weight:-

MASS

• mass is a property of matter. the mass of an object is the same everywhere.
• Mass can never be zero.
• mass does not change according to location.
• mass is a scalar quantity. it has magnitude.

WEIGHT

• weight depends on the effect of gravity. weight increases or decreases with higher or lower gravity.
• weight can be zero if no gravity acts upon an object, as in space.
• weight varies according to location.
• weight is a vector quantity. it has magnitude and is directed toward the centre of the earth or other gravity well.

B).

= W ( Moon) = mg (Moon) = 10*10/6 = 16.7N (here 1 divided by 6 gravity on moon is only 1/6 that of Earth)

W ( Earth) = mg ( earth) = 10*10 = 100N

The mass 10 kg on both the moon and earth.