1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# A block of mass m is placed on the top of another block of mass M as shown in the figure. The coefficient of friction between them is μ. Maximum acceleration of M such that M and m move together is (there is no friction between ground and M)

A
μg
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
gμ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
μ2g
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
gμ2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

## The correct option is A μgBy the free body diagram of the upper block, as the upper block will have only frictional force and that causes the blocks to move together. Maximum available friction to move m =μN=μmg Hence by the force equation on this block f=ma ⇒μmg=mamax ⇒amax=μg Option A is the correct answer

Suggest Corrections
0
Join BYJU'S Learning Program
Related Videos
Warming Up: Playing with Friction
PHYSICS
Watch in App
Explore more
Join BYJU'S Learning Program