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
        
three blocks m1,m2 and m3 of masses 8kg,3kg and1 kg are placed in contact on a  smooth surface.Forces F1=140N and F2=20N  are acting on blocks m1 and m3 respectivly.The reaction between blocks m2 and m3 is
1)2.5N
2)7.5N
3)22.5N
4)30N
 
4 months ago

Answers : (1)

Pooja
126 Points
							
                  T2       T1
20N⬅️1⃣➖3⃣➖8⃣➡️140N
             m3     m2    m1
                          ➖➖➡️a  
The net force on the system is 140-          20=120N
So acceleration is 120÷(8+3+1)=10m/s2
Let the force between m3 and  m2 be  T2
 Using free body diagram of m3
                    ➖➡️m3(a)
          20⬅️1⃣➡️T2
 T2-20=m3(a)
Hence T2= 1(10)+20
          T2 = 30N
The reaction between blocks m2 and m3 is 30 N (4th option)
 
 
 
4 months 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