Question

an object has mass of 90 kg on the surface of earth. what will be the weight of the object on earth? also find mass and weight of this object on the surface of moon. is it different from that on Earth if yes give reason?​

Answer 1

Answer: An object has 90kg as its mass. Calculating the weight is W=M*gravity. 90 * 9.8=882N.

That is the weight on Earth.

Explanation: the mass on Earth is the same as mass on the Moon. Mass doesn't change. To calculate the weight on Moon. 882/9.8*1.622 = 145.98N. it simply means that to calculate weight on the moon, the formula is weight on Earth/9.8 multiply by 1.622 . Because the weight of an object in moon is 1/6th that on earth

Answer 2

Weight of Earth is 882 N

Weight on Moon is 150.3 N

Explanation:

Given that,

Mass of an object, m = 90 kg

The acceleration due to gravity on Earth is $9.8\ m/s^2$. Weight of an object is given by :

W = mg

$W=90\times 9.8=882\ N$

Mass of the moon remains same always. Its mass on Moon will remain 90 kg. We know that the acceleration due to gravity on the surface of earth is $1.64\ m/s^2$. Its weight on moon is :

$W'=90\times 1.67=150.3\ N$

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