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
        

does friction depends on area under contact force??????


    EXPLAIN WITH FBD N LOGICAL REASON

9 years ago

Answers : (1)

bhanuveer danduboyina
95 Points
							

Friction force has NO "surface area" component. This is hard to understand (and it sounds like the teacher who asked this question doesn't quite understand either...).

Imagine this-- A block of wood with a flat bottom and a legged wooded stool sit on a smooth inclined plane. Do we have to know the contact area (surface area) of the block or the stool legs to determine the angle at which each will slide? No. We merely need to know the applied weight and the coefficient of friction between the materials.

So why does a dragster have such big smooth tires? Wouldn't thin knobby bicycle tires do as well? As far as the friction force is concerned, Yes. But the issue the dragster faces is how to transfer the engine power to the asphalt to accelerate the car. This involves HUGE problems of material strength, power, heat and wear that takes the problem far outside the narrow concerns of friction force.

PLEASE APPROVE MY ANSWER IF YOU LIKED IT!!

8 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