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

# A block of mass m is attached to one end of a mass less spring of spring constant k. The other end of spring is fixed to a wall. The block can move on a horizontal rough surface. The coefficient of friction between the block and the surface is μ. Then the compression of the spring for which maximum extension of the spring becomes half of maximum compression :

A
2mgμk
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
mgμk
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
4mgμk
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
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 A 4mgμkEi−Ef=Work done against friction∴12kx2−12k(x2)2=μmg(x+x2)∴x=4μmgk

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