badge image

Enroll For Free Now & Improve Your Performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
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: 11

                        

In the case of work done against friction, the internal energy change is independent of the velocity (or inertial reference frame) of the observer. That is, different observers would assign the same quantity of mechanical energy transformed into internal energy due to friction. How can this be explained, considering that such observers measure different quantities of total work done and different changes in kinetic energy in general?

5 years ago

Answers : (1)

Kevin Nash
askIITians Faculty
332 Points
							The frictional force acting on a sliding surface is not a single force acting at a single point, but is instead due to many smaller forces acting at various surface points. In the case of work done against friction, the internal energy change is independent of the velocity of the observer. The frictional process as one in which, depending on how we define the system boundary, energy can be transferred between the objects within a system or between the system and its environment, in either case changing the internal energy of the objects. Without a microscopic model we do not know how the total gain in internal energy is shared among the objects in the system, and we therefore cannot calculate the work done by the frictional force that is responsible for this transformation.
5 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


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


Ask Experts

Have any Question? Ask Experts

Post Question

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