Question

The weight of 50 kg person at the surface of earth is:
(A) 50 N
(B) 35 N
(C) 380 N
(D) 490 N

Answer 1

Hint Weight of an object is defined as the gravitational pull exerted by the earth on the object. Based on this concept we have to answer the question.

Complete step by step answer
We know that the weight of an object on the surface of the earth is denoted as W.
The expression is given as: mass $\times$ acceleration due to the gravity.
$\Rightarrow m\times g$
We have to put the values to get:
$m\times g=50\times 9.8=490N$
The weight of the 50 kg person at the surface of earth is 490 N.

Hence the correct answer is option D.

Note It is known that gravity is defined as the force that holds the planets in the orbit when they revolve around the sun. Gravity also keeps the moon in the orbit of the Earth. The gravitational pull of the moon pulls the seas towards itself. This is the cause behind the formation of the ocean tides.
Gravitational pull is invisible in nature, that is the cause behind the pull of the massive objects to attract small objects towards them. For instance, we can consider an instance that when a person jumps up in the air, then is the earth’s gravitational pull that causes him to return back to the ground.
Every object has gravity and the larger ones have more gravitational pull to produce and attract the smaller objects towards them.