Question

Newton's Second Law of Motion is expressed as F = ma.

A lawn mower with constant mass is pushed over a length of grass. An attachment is added that doubles its mass.

How much force is now required to push the lawnmower at the same rate of acceleration?

A.
The force required is double the original value.

B.
The force required is half the original value.

C.
The force required remains constant.

D.
The force required is four times the original.

Answer 1

A is the correct answer. Mass and force are directly proportional, so if you double mass, you double force also.