MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 6
        
The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is
(a) mgR/2
(b) 2 mg /R
(c) mgR
(d) mgR/4
4 years ago

Answers : (2)

Deepak Patra
askIITians Faculty
471 Points
							

(c) K.E. = ½ mv2e ­where ve = escape velocity = v2gR

? K.E = ½ m x 2gR = mgR
4 years ago
Abhishek Dimri
21 Points
							The answer is (c)We know that K.E. 1/2 mV^2e.    ..........(1)Where Ve = escape velocityVe = √(2gR)V^2e = 2gRPutting the value of V^2e in eqn (1) we have K.E. = 1/2 m2gRK.E. = mgR
						
4 months ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Get Extra Rs. 551 off

COUPON CODE: BCK2SKOOL


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Get Extra Rs. 594 off

COUPON CODE: BCK2SKOOL

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details