Question

According to Newtonian mechanics,
I. Mass is a quantitative measure of a body's inertia.
II. Mass is a measure of the attraction of one body to another.
III. Inertial and gravitational masses are equivalent.
IV. Mass is invariant.
Which combination is correct?
A. I, II and IV only
B. I, II and III only
C. I, III and IV only
D. I, II, III and IV

Answer 1

Hint – To get the right answer you need to know that Newton's Laws of motion are invariant under a Galilean transformation, that is, the inertial mass is unchanged under Galilean transformations. Inertial mass and gravitational mass are not merely equal, they are identical. Knowing this will solve your problem.

Complete Step-by-Step solution:
Inertia is one of the primary manifestations of mass, which is quantitative. According to Newton, an object will stay at rest or stay in motion unless and until the force is applied on it.
Inertial mass and gravitational mass are the same thing.
It is also correct that the masses attract the other masses according to the law of gravitation with the gravitational force.
According to Newtonian mechanics masses are invariant. It does not change itself according to Newton.
So, the correct option is D.

Note – To get the right answer to these problems you need to study classical mechanics and need to remember the concepts of inertial masses and the rest of the thing related to masses. Doing this will solve your problem.