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

A cubical block (side 2 m) of mass 20 kg slides on inclined plane lubricated with the oil of viscosity η=101 Poise with constant velocity of 10 m/s. Find out the thickness of the layer of liquid. (g=10m/s2)


A
4×103 m
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
3×103 m
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
2×103 m
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
1×103 m
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 4×103 m
We know that , Fv=ηAdvdz=ηAvh


Balancing forces along inlined plane,
mgsinθ=Fv=ηAvh
20×10×sin30=102×4×10h
h=4×103 m=4 mm

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon