Question

Find the weight of a body of mass 50 kg on the surface as well as at the centre of Earth​

Answer 1

Answer:

• 490N is the weight on the surface
• 0N is the weight at the centre of earth.

Explanation:

According to the Question

It is given that,

• Mass of Body ,m = 50kg

we have to calculate the weight of body on the surface .

As we know that the acceleration due to gravity is 9.8m/s²

Calculating Weight on the Surface

• Weight = mg

substituting the value we get

→ Weight = 50×9.8

→ Weight = 490N

• Hence, the weight of the body on the surface is 490 Newton.

Now,

Calculating the weight of body at the centre of earth .

Since the acceleration due to gravity at the centre of earth is zero .

So,

• Weight = mg

→ Weight = 50×0

→ Weight = 0 N

• Hence, the weight at the centre of earth is 0 N

Answer 2

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490N is the weight on the surface •ON is the weight at the centre of

earth.

Explanation:

According to the Question

It is given that,

• Mass of Body ,m = 50kg

we have to calculate the weight of body on the surface. due to

As we know that the acceleration gravity is 9.8m/s²

Calculating Weight on the Surface

• Weight = mg

substituting the value we get

→ Weight = 50×9.8

Weight=490N

. Hence, the weight of the body on

the surface is 490 Newton.

Now,

Calculating the weight of body at the

centre of earth. Since the acceleration due to gravity at the centre of earth is zero.

So,

. Weight = mg

→ Weight = 50×0

Weight = ON

. Hence, the weight at the centre of earth is O N