The force of gravity on a 2-kg rock is twice as great as that on a 1 -kg rock. Why then doesn't the heavier rock fall faster?
We have to understand that why, motion of a falling object under gravity doesn’t depends upon the mass of an object.
Step 1 of 3</p>
Concept: From Newton's first law: An object of larger mass has a larger inertia and second law.
From Newton's second law: Acceleration of an object is the ratio of force to mass.
Step 2 of 3</p>
Under the action of force due to gravity, the force acting on the 2 kg object is twice as great in comparison to the force acting on the 1 kg rock due to gravity. So we can say, that the mass and in turn the inertia of the 2 kg rock is twice the mass (inertia) as that of the 1 kg rock.
Since, acceleration is the ratio of force to mass, so we can conclude that the two rocks should have the same acceleration.
Textbook: Physics: Principles with Applications
Author: Douglas C. Giancoli
The full step-by-step solution to problem: 10Q from chapter: 4 was answered by , our top Physics solution expert on 03/03/17, 03:53PM. This full solution covers the following key subjects: Rock, gravity, faster, Force, Fall. This expansive textbook survival guide covers 35 chapters, and 3914 solutions. The answer to “The force of gravity on a 2-kg rock is twice as great as that on a 1 -kg rock. Why then doesn't the heavier rock fall faster?” is broken down into a number of easy to follow steps, and 27 words. Since the solution to 10Q from 4 chapter was answered, more than 279 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: Physics: Principles with Applications, edition: 6. Physics: Principles with Applications was written by and is associated to the ISBN: 9780130606204.