Question:
Two bodies of different masses are dropped from a tower, assuming that air resistance is proportional to the mass of body. Which of the following is correct?
Two bodies of different masses are dropped from a tower, assuming that air resistance is proportional to the mass of body. Which of the following is correct?
Updated On: Jul 5, 2022
- Body with smaller mass reaches first
- Body with greater mass reaches first
- Both of them reach simultaneously
- None of these
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The Correct Option is A
Solution and Explanation
Air resistance is more for the bigger mass (given). Therefore the retardation due to air resistance is more for the bigger mass. Therefore the smaller mass reaches first. Although g, the acceleration is the same for both, retardation due to air-resistance is less for the smaller mass
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Concepts Used:
Motion in a straight line
The motion in a straight line is an object changes its position with respect to its surroundings with time, then it is called in motion. It is a change in the position of an object over time. It is nothing but linear motion.
Types of Linear Motion:
Linear motion is also known as the Rectilinear Motion which are of two types:
- Uniform linear motion with constant velocity or zero acceleration: If a body travels in a straight line by covering an equal amount of distance in an equal interval of time then it is said to have uniform motion.
- Non-Uniform linear motion with variable velocity or non-zero acceleration: Not like the uniform acceleration, the body is said to have a non-uniform motion when the velocity of a body changes by unequal amounts in equal intervals of time. The rate of change of its velocity changes at different points of time during its movement.