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: 12th pass
        
A block of mass 0.1 is held against a wall applying a horizontal force of 5 N on the block . If the coefficient of friction between the block and the wall is 0.5, the magnitude of the frictional force acting on the block is :
a) 2.5 N
b) 0.98 N
c) 4.9 N
d) 0.49 N
3 years ago

Answers : (3)

bharat bajaj
IIT Delhi
askIITians Faculty
123 Points
							Normal force = F = 5 N
Coeff. Of friction = 0.5

Frictional force = 0.5 Ɨ 5 = 2.5 a)

Thanks
BHARAT BAJAJ
Askiitians faculty
3 years ago
Gopal Dahale
40 Points
							
the answer is b 0.98N but i dont know how. just to disprove the above answer i am writng this. ithink we should also take the mass of the block(0.1kg) into account in order to solve this problem.Thank you
one year ago
Gopal Dahale
40 Points
							Ff = F*Cf = 5*0.5 = 2.5N The weight of the block is 0.1*9.8 = 0.98N The block isn`t moving which means the forces on it are balanced. The weight = 0.98N is balanced by the friction force so Ff = 0.98N But that block won`t move downard until the weight plus downward force exceeds 2.5N or until the upward force exceeds 2.5 + 0.98 N =3.48N
						
one year ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete Physics Course - Class 12
  • OFFERED PRICE: Rs. 2,756
  • View Details


Course Features

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


  • Complete Physics Course - Class 11
  • OFFERED PRICE: Rs. 2,968
  • View Details

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 ā€˜nā€™ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details