wiz-icon
MyQuestionIcon
MyQuestionIcon
5
You visited us 5 times! Enjoying our articles? Unlock Full Access!
Question

A block of mass 1 kg lies on horizontal surface in a truck. The coefficient of static friction between the block and the surface is μs=0.6. If the acceleration of the truck is 5 m/s2, the friction force acting on the block is


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

The correct option is B 5 N
Let us assume the truck has acceleration in the righttward direction. The FBD of the block in the frame of truck can be shown as

From the FBD we have
N=1g=10 N
fmax=μN=10μ=10×0.6=6 N
Applying the concept of pseudo force in the frame of truck,
the force on the block is
ma=1×5=5 N
Since, fmax>ma, the friction force acting over the block is f=ma=5 N

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