A solid sphere falls with a terminal velocity of 20 m / s in air. If it is allowed to fall in v

Name: Problem 11, Chapter 11: Guide to Physics IIT JEE
Uploaded: 2021-09-26T22:04:56-08:00
Duration: 2 min 7 s
Channel: Akshaya Rs
Description: A solid sphere falls with a terminal velocity of 20 m / s in air. If it is allowed to fall in vaccum, (a) terminal velocity will be 20 m / s. (b) terminal velocity will be less than 20 m / s. (c) terminal velocity will be more than 20 m / s. (d) there will be no terminal velocity.

step 1 In this question we will learn about some basic concept of the Stokes law. The question is a sol

Question

A solid sphere falls with a terminal velocity of $20 \mathrm{~m} / \mathrm{s}$ in air. If it is allowed to fall in vaccum, (a) terminal velocity will be $20 \mathrm{~m} / \mathrm{s}$. (b) terminal velocity will be less than $20 \mathrm{~m} / \mathrm{s}$. (c) terminal velocity will be more than $20 \mathrm{~m} / \mathrm{s}$. (d) there will be no terminal velocity.

   A solid sphere falls with a terminal velocity of $20 \mathrm{~m} / \mathrm{s}$ in air. If it is allowed to fall in vaccum,
(a) terminal velocity will be $20 \mathrm{~m} / \mathrm{s}$.
(b) terminal velocity will be less than $20 \mathrm{~m} / \mathrm{s}$.
(c) terminal velocity will be more than $20 \mathrm{~m} / \mathrm{s}$.
(d) there will be no terminal velocity.

Guide to Physics IIT JEE

Ravi Raj Dudeja 1st Edition

Chapter 11, Problem 11

Instant Answer

Solved by Expert Akshaya Rs

09/26/2021

Step 1

Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration. In air, this resistance is due to air drag. Show more…

Show all steps

Thanks for your feedback!

A solid sphere falls with a terminal velocity of $20 \mathrm{~m} / \mathrm{s}$ in air. If it is allowed to fall in vaccum, (a) terminal velocity will be $20 \mathrm{~m} / \mathrm{s}$. (b) terminal velocity will be less than $20 \mathrm{~m} / \mathrm{s}$. (c) terminal velocity will be more than $20 \mathrm{~m} / \mathrm{s}$. (d) there will be no terminal velocity.

Play audio

Feedback

Akshaya Rs and 83 other educators are ready to help you.

Ask a new question

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Terminal Velocity

Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium (such as air) prevents further acceleration. This speed is achieved when the drag force from the medium balances the force of gravity acting on the object. In a vacuum, where there is no atmospheric drag, the concept of terminal velocity does not apply because no force opposes the acceleration due to gravity.

Air Resistance (Drag Force)

Air resistance, or drag force, is the force exerted by air against the motion of an object. This force acts in the opposite direction to the object's motion and increases with the object's speed. It is the primary factor that limits an object's acceleration in the atmosphere, leading to terminal velocity. In a vacuum, the absence of air means there is no drag force acting on the falling object.

Please give Ace some feedback