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
iit jee Grade: Upto college level
        

TWO BOYS ARE RIDING ON A MERRY GO ROUND WHICH ARE TURNING AT A CONSTANT RATE.BOY 'A' IS AT OUTER RIM.AND


BOY 'B' IS CLOSER TO CENTER OF ROTATION.WHO HAS TO HOLD ON TIGHTER?PLZZZ EXPLAIN WITH REASON.(ASSUME THEIR


MASSES TO BE SAME).............??????????????

6 years ago

Answers : (4)

Shivam Bhagat
22 Points
										boy B needs hold more tightly because        1. boy B has to face more centrifugal 


force as mv2/r=F

2. Boy B has less moment of inertia(mr2)
6 years ago
Ritvik Gautam
85 Points
										

Boy A has to hold tightly.


 


Reason:


We know,


Torque = RxF


Hence, we can say, that the person who is at a greater distance from the axis of rotation (center of merry-go-round) experiences a greater torque. Since, he faces more torque, hence boy A needs to apply greater force to balance that torque. Therefore, Boy A needs to hold tighter.


 


 


Please Approve!!


 

6 years ago
Shivam Bhagat
22 Points
										torque = F*r 

A F=mv2/r T=mv2/r *r=mv2
B F=mv2/R T=mv2/R *R=mv2
(mv2/r is centrifugal force)
So, A and B experience the same torque
B experiences greater force as mv2/r=F
So r of B is smaller than A so, force will be greater.........
6 years ago
Shivam Bhagat
22 Points
										pls cancel all the ans above , the correct ans is-

Boy A because it has to face the centrifugal force mv2/R = m(wr)2/r=mw2r. w is equel here so the one with greater radius will face more force , hencce boy A has to hold more tightly.
THIS IS CORRECT!!!!!

Sorry for wrong ans above.
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
  • Complete Physics Course - Class 11
  • OFFERED PRICE: Rs. 2,968
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

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