CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
Question

A block of mass m is placed on a rough inclined plane of inclination θ kept on the floor of the lift. The coefficient of friction between the block and the inclined plane is μ. With what acceleration will the block slide down the inclined plane when the lift falls freely?

A
Zero
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
gsinθmugcosθ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
gsinθ+mugcosθ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
None of the above
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A Zero
If lift falls freely. Apply relative motion concept.(If we stop the lift and add opposite action on block it is relative motion.)
Since mg=mg gets cancelled.
There is no force applied on the block . Hence no friction
a=0

975378_1026287_ans_06b3817168f64b0aa7e4e0ce0fd18fc7.png

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
The Journey So Far
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon