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
Sudheesh Singanamalla Grade: 12
        

A srone tied to a string of length L is whirled in a vertical circle with the other end of the string at the centre. At a certain instant of time, the stone is in the lowest position , and has a speed u. The magnitude of the change in its velocity as it reaches a position where the sting is horizontal is :


a) root (u^2 - 2gL)


b) root (2gL)


c) root (u^2 - gL)


d) root (2(u^2 - gL))


 


please help by answering this Q and the method to do this Question

7 years ago

Answers : (2)

vikas askiitian expert
510 Points
										

applying energy conservation


 1/2mu^2=mgl+1/2mv^2


  we get v=root(u^2-2gl)


  in vector form we can express as v vector=root(u^2-2gl)j and u vector =ui


  difference is v-u =root(u^2+v^2)=root(2(u^2-gl))

6 years ago
Sudheesh Singanamalla
114 Points
										

Can some1 explain this more clearly !

6 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete Physics Course - Class 12
  • OFFERED PRICE: Rs. 2,756
  • View Details
Get extra Rs. 1,185 off
USE CODE: JYOTI
  • Complete Physics Course - Class 11
  • OFFERED PRICE: Rs. 2,968
  • View Details
Get extra Rs. 1,276 off
USE CODE: JYOTI

Ask Experts

Have any Question? Ask Experts

Post Question

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