CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

Masses of block A, B and C are 10 kg, 2kg and 3kg respectively and they are arranged as shown in the figure. There is a uniform electric field towards right of magnitude 10 N/C and block C has charge 0.5 C. If frictional coefficient between block A and the floor is 0.1, between block C and wall is 0.2 and there is no friction between A and B, then which of the following option(s) is/are correct: (Assuming pulley and string to be ideal)

  1. Acceleration of block B is 1.285 m/s2.
  2. Acceleration of block C is 2.14 m/s2.
  3. Acceleration of block A is 0.855 m/s2.
  4. Tension in the string is 22.57 N.


Solution

The correct options are
B Acceleration of block C is 2.14 m/s2.
C Acceleration of block A is 0.855 m/s2.
D Tension in the string is 22.57 N.
(B, C, D)

For C-block
29-N = 3a        ….(i)

For B-block
20-T = 2b         …(ii)

For system of A and B
T-0.1(100+T)=12(a+b)       (iii)
By solving (i), (ii) and (iii), we get
T=22.5N; a= 2.14 m/s2
B = -1.285 m/s2

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


People also searched for
View More



footer-image