0

Guest

Courses New

Question no. 28 from photo pls how to calculate it and basic also in simple and readable material.

Question no. 28 from photo pls how to calculate it and basic also in simple and readable material.

Question Image
Grade:12

1 Answers

Vikas TU
14149 Points
7 years ago
Draw the FBDs of the blcks in both two cases separately after applying the force P.
Case 1:
Fbd for 3m blcok will be as it is exerting on 3m mass:
P – N1 = 3ma1 …...................(1)
FBD for 2m mass:
N1 =  2ma1 …...............(2)
solving eqns. (1) and (2)
N1 = 2/5P ….........................................................(A)
 
Case 2:
 
fotce is acting on 2m mass:
Fbd of mass 2m:
P – N2 = 2ma2 
FBD of mass 3m =>
N2 = 3ma2
solving these 2 eqns.
N2 = 3/5P ….....................(B)
 
Dividing eqns .  (A) and(B)
we get 
N1/N2 = 2/3 =  >  same as  2:3

Think You Can Provide A Better Answer ?

Other Related Questions on Mechanics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More