The earth attracts a body of mass $1 k g$ with a force of $10 N$ . The mass of a boy is $50 k g$ . His weight will be :

$5 N$

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$50 k g$

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500 N

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50 N

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Solution

The correct option is C $500 N$
Option (b) is correct.

We know,

$W = m g$

where,

W $=$ Weight of the object,

$m =$ mass of object, and

$g =$ acceleration due to gravity

$g = \frac{F}{m}$

Given, $m = 1 k g$ and its weight, $W = 10 N$

$g = \frac{10 N}{1 k g} = 10 {N k g}^{- 1}$

If $m = 50 k g$ , its weight $W$ will be,

$W = m g$

$= 50 k g \times 10 {N k g}^{- 1}$

$= 500 N$

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The earth attracts a body of mass 1 kg with a force of 10 N. The mass of a boy is 50 kg. His weight will be :

The correct option is C 500 NOption (b) is correct. We know, W=mg where, W = Weight of the object, m= mass of object, and g= acceleration due to gravity g=Fm Given, m=1 kg and its weight, W=10 N g=10 N1 kg=10Nkg−1 If m=50 kg, its weight W will be, W=mg =50 kg×10Nkg−1 =500 N

The earth attracts a body of mass $1 k g$ with a force of $10 N$ . The mass of a boy is $50 k g$ . His weight will be :