The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth is : 

 

  • Option 1)

    mgR 

  • Option 2)

    2 mgR 

  • Option 3)

    1/2 mgR 

  • Option 4)

    3/2 mgR 

 

Answers (1)

U_s = \frac{- Gmm}{R } \\\\ U_p = \frac{- Gmm}{2R } \\\\ \Delta U = \frac{Gmm}{R } \left ( 1- \frac{1}{2} \right ) = \\\\ \Delta U = \frac{1}{2} \frac{Gmm}{R} \\\\ W = \Delta U = \frac{1 G mmR}{2 R*R} = \frac{1}{2}mgR


Option 1)

mgR 

Option 2)

2 mgR 

Option 3)

1/2 mgR 

Option 4)

3/2 mgR 

Most Viewed Questions

Preparation Products

Knockout NEET 2024

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports,.

₹ 29999/- ₹ 24999/-
Buy Now
Knockout NEET 2025

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 45000/-
Buy Now
Knockout NEET (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports.

₹ 7999/- ₹ 4999/-
Buy Now
Knockout NEET 2023 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports.

₹ 13999/- ₹ 6999/-
Buy Now
Knockout NEET (Three Months Subscription)

- AI Coach Study Modules, - Unlimited Mock Tests, - Study Improvement Plan.

₹ 5999/- ₹ 4499/-
Buy Now
Boost your Preparation for NEET 2021 with Personlized Coaching
 
Exams
Articles
Questions