A body is moved to a planet where the acceleration due to gravity is reduced by 30% compared with Earth. Assuming its mass remains unchanged, which statement is correct?
Its weight becomes 70% of its weight on Earth.
Mass is the quantity of matter in a body; it does not depend on location, so it stays the same on the new planet.
Weight is \(W = mg\). If g is reduced by 30%, then \(g' = 0.7g\).
So \(W' = m(0.7g) = 0.7W\), i.e. the weight becomes 70% of its Earth weight.
The other statements fail: weight cannot rise to 10/7 times when g falls; mass never changes with gravity, so neither “mass decreases by 30%” nor “both mass and weight decrease” is correct.
Hence, the answer is Its weight becomes 70% of its weight on Earth.
Similar Questions
A homogeneous material is altered so that its mass becomes three times its original value while its volume becomes twice its original value. What is the new density compared to the original density?
A body weighs W1 at a place where the acceleration due to gravity is g1. At another place, its weight becomes 5/3 W1. Assuming the mass of the body remains constant, what is the ratio g2:g1?
A container holds a fixed mass of gas. The gas is compressed until its volume is reduced in the ratio 5 : 2. Compared to its initial value, the density of the gas becomes ______.
A solid metal block and a gas enclosed in a flexible balloon are subjected to the same increase in external pressure. Which one experiences the greater increase in density?
An astronaut carries a metal block from the Earth to the Moon. Which physical quantity of the block remains the same throughout the journey?
A student determines the density of a liquid and then compares it with the density of water to calculate its relative density. Which statement correctly distinguishes these two quantities?
Important Questions from Mass Weight and Density
The body will move only when
Mass and weight ________
- What is the formula for density?
A spherical aluminium ball is melted and made into smaller balls of the 1/3rd radius of original one. Then how many such balls can be made?
The weight of 75 m3 volume of metal is 150 gm. Find the weight of 300 m3 volume of same metal
