Question

Amman weighs 81.5 N on the moon. If the acceleration due to gravity on the moon is 1.63m/s 2 , find the mass of the man and his weight on the earth.

Answer 1

Answer:

Step-by-step explanation:

on earth

50=mass .weight =50×10=500N

Answer 2

Answer:

Mass of man = 50 kg

Weight of man on Earth = 500 N (g = 10 m/s^2)

Weight of man on Earth = 490 N (g = 9.8 m/s^2)

Step-by-step explanation:

Weight = Mass x Gravity (1)

Mass = Weight ÷ Gravity (2)

Weight on Moon = 81.5 N

Gravity on Moon = 1.63 m/s^2

Mass = Weight ÷ Gravity on Moon

Mass = W/g = 81.5/1.63 = 50 kg

Since mass does not change, we will use the same mass for finding weight on Earth.

1) Gravity on Earth = 10 m/s^2:

Weight = Mass x Gravity

Weight = m x g = 50 x 10 = 500 N

2) Gravity on Earth = 9.8 m/s^2:

Weight = m x g = 50 x 9.8 = 490 N

Note: You can consider any one of the two Weight answers according to the standard of Gravity your institute follows