Question

Define mass and weight of an object. Write their S.l. units. An object has mass of 20
kg on earth. What will be its mass and weight on the surface of the moon ?
(g on moon =1.6 m/s?)​

Answer 1

Answer:

$\boxed{ \sf{ \huge{ \green{Mass }}}}$

Mass is the measure of matter present in a body.

• Mass measures the quantity of matter regardless of location of an object in the universe or the Gravitational force applied to it.
• An object's mass is always constant in all circumstances.
• For example , the weight of a body may be different on moon and earth , but their masses are same.

Given:

Mass of object = 20 kg

Gravitational acceleration on moon

= 1.6 m/s²

To find:

Mass and weight of that object on moon

Concept:

Mass will remain constant = 20 kg.

Weight is a force given by product of mass with gravity

Weight = 20 × 1.6 = 32 N

Answer 2

$\huge{\underline{\underline{\red{\mathfrak{AnSwEr :}}}}}$

$\large{\mathtt{\green{Mass \: :}}}$ Quantity of matter contained in a body. And it doesn't varies from place to place

$\large{\mathtt{\green{Weight \: :}}}$ Weight is Product of mass and acceleration due to gravity.

_________________________________

• Mass of Object on earth = 20 kg

If mass of the object on earth is 20 kg then mass of the object on the moon will be same which is 20 kg for Moon.

And, Now Weight of Object

$\implies {\boxed{\sf{W \: = \: mg}}} \\ \\ \implies {\sf{W \: = \: 20 \: \times \: 1.6}} \\ \\ \implies {\sf{W \: = \: 32}} \\ \\ {\underline{\sf{\therefore \: Weight \: of \: object \: on \: moon \: is \: 32 \: N}}}$