Question

A man with a mass of 45 kg has a force of...

Answer 1

Answer:

What would a person weigh on the moon if they weigh 45 kg on the earth?

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The question itself is wrong. Weight is a force with SI unit of Newyon while mass is a different thing and has the unit of KG

Weight is how much force a person or body puts on the planet

Mass is how much matter you have.

Matter remains constant where as weight changes as the gravitational field strength changes.

Weight can be calculated by Newton meter where as getting to know mass is relative.

When you say a person weighs it has to be Newton not Kg

So if a person has Mass of 45 kg then his weight is 450 Newton. So that person would weight. 73 Newton but mass will remain same.

AGAR ACHA LAGE TO KARIYO

Answer 2

The force = 450N (Newton)

GIVEN:- Mass = 45kg

TO FIND:- Force

SOLUTION:-

• The Gravity of Earth's acceleration is almost 9.81 m/s2, which implies that ignoring the effects of air resistance and the speed of an object falling freely, we can round it to 10 m/s² for calculation motives.

• The force of a body is a weight exerted by which the Earth attracts the body towards the centre of the earth

• To find force (f) when you already know the mass (m), use the formula force = mass multiplied by gravitational acceleration(g).

$f = m \times g$

By putting the values in the formula

$= 45 \times 10 \\ = 450 \: newton$

Hence, the force = 450N (Newton)

#SPJ2