Weight of an object on earth is 441 N. What is the mass of the object?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 1: 45 kg.
Explanation:
The weight (W) of an object is equal to the product of its mass (m) and the acceleration due to gravity (g).
Formula: W = m × g
Given here:
• Weight of the object (W) = 441 N
• Acceleration due to gravity on Earth (g) = 9.8 m/s² (average value)
To find the mass (m):
m = W/g
m = 441/9.8
m = 45 kg
Therefore, the mass of the object is 45 kg.
Additional Facts:
• Mass: This is the quantity of matter contained in an object, which does not change when its location changes (a scalar quantity).
• Weight: This is the force with which the Earth pulls an object towards itself. It can change when the location changes (a vector quantity).
• SI Units: The unit of mass is the kilogram (kg), while the unit of weight is the Newton (N).
• Weight on the Moon: The weight of an object on the Moon is approximately 1/6th of its weight on Earth.
Potential Questions for Upcoming Exams:-
Question: If the mass of an object on Earth is 60 kg, what will be its mass on the Moon?
Answer: 60 kg (Mass never changes).
Question: Which instrument is used to measure weight?
Answer: Spring Balance.
Question: Where on Earth is the value of 'g' (acceleration due to gravity) the highest?
Answer: At the Poles.