Question

The weight of a boy on surface of the earth is 294N . Find the mass in easy process

Answer 1

Given:-

• $\sf\blue{Weight\:of\:a\:boy = 294N}$

• $\sf\pink{Acceleration = 9.8m/s^2}$

To Find:-

• $\rm\red{Mass\:of\:the\:earth.}$

Formulae Used:-

• ${\boxed{\sf{\blue{W = mg}}}}$

Now,

$\implies\rm\blue{ w = mg}$

$\implies\rm\red{ 294 = m\times{9.8}}$

$\implies\rm\pink{ 294 = 9.8m}$

$\implies\rm\blue{ m = \dfrac{294}{9.8}}$

$\implies\rm\red{ m = 30kg}$.

EXTRA INFORMATION

• Acceleration due to Gravity (g) is 9.8m/s²

• Force of gravitation is minimum in equator and maximum in poles

• The Acceleration due to Gravity at the center of the earth is zero.

• The Value of G is 6.67 × 10²³

Answer 2

$\huge \bf \red{ \mid \overline{ \underline{ANSWER}} \mid}$

$\bf \pink{GIVEN - }$

→ The weight of a boy on the surface of earth is 294 Newton.

basically weight is the acceleration due to gravity felt by us due to being in the gravitational field of earth!

so , if weight is the acceleration due to gravity hence ,

→ w = mg ( m = mass , g = acceleration due to gravity)

→ 294 = mg

The value of g for earth is 9.8 m/s

→ 294 = m × 9.8

→ m = 294/9.8 = 30

→ Hence , mass of a boy is 30kg