Question

Which of the following has greater inertia?
a).50 paise coin
b).1rupee coin
c).5rupees coin

Answer 1

Hint: In this question, we will use the basic definition of inertia and mass. This will directly give us the required result. Further, we will discuss the basics of force. Also, we will see about the three laws of motion, given by Newton, for our better understanding.

Complete step by step solution:
As we know mass is the measure of transnational inertia. Also, inertia is the tendency of an object to remain at rest or in motion; it is related to mass of an object.
So, the object having more mass means it has more inertia.
Here, as 5 rupees coin is heaviest among the other two coins. So, we can say that a 5 rupees coin has the maximum inertia.

Therefore, the correct option is C) i.e., 5 rupees coin has greater inertia.

Additional information:
As we know Newton’s first law of motion, states that an object continues to be in rest or in motion in a particular direction until and unless any external force is applied on it, this is also known as law of inertia.
Now, force is simply any push or pull. The S.I unit of force is Newton represented by N. The acceleration is defined as the increase in the velocity of an object. The acceleration is measured in meters per Second Square.
There are three laws of motions given by Newton. These laws of motion relate an object's motion to the forces acting on it.
First law of motion states that an object continues to be in rest or in motion in a particular direction until and unless any external force is applied on it.
 In the second law of motion, the force on an object is equal to its mass times its acceleration. This law also gives the relation of momentum and force.
In the third law of motion, every action has an equal and opposite reaction.

Note:
Force applied on an object changes its motion, speed, direction and also its shape. There is a very small difference between the force applied and the pressure applied on an object. Pressure is always given as the force per unit area.