wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Two blocks A and B of masses mA=1 kg and mB=2 kg are placed in contact on a frictionless incline of inclination 30. Find the magnitude of contact force between the two blocks when an external force is applied on the blocks as shown in the figure.


A
10 N
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
6 N
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
2 N
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
None of these
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 6 N

We can consider both the blocks as a system of mass 3 kg as they move with same acceleration.

FBD of the system will be




FMgsinθ=Ma
1830sin30=3a
a=1 m/s2

Let N be the the contact force between the two blocks.



Drawing F.B.D of 1 kg block separately,



NmAgsinθ=mAa
N10sin30=1
N=6 N

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Problem Solving Using Newton's Laws
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon