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

A 10 kg block is kept on a horizontal surface and Ram is trying to pull it with a force of 5 N. Given coefficient of static friction is 0.2 and coefficient of Kinetic friction μK = 0.1 Which of these statements is/are correct.


A

He will succeed in pulling the block

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

He won't succeed in pulling the block as kinetic friction on block will be 30N

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

He won't succeed in pulling the block as friction on block will be 10N

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

He won't succeed in pulling the block as force applied is only 5N whereas friction force can resist up to 20N.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D

He won't succeed in pulling the block as force applied is only 5N whereas friction force can resist up to 20N.


To move a body on a rough surface you need to apply a force greater than the limiting value of state friction.

If the external force's value is less than that of limiting friction, it will oppose with equal amount of force

Here limiting friction μs N = 0.2 × 10 × 10 = 20N

So friction can vary from 0 - 20N depending upon how much force you apply.

So if you push with 5N you won't be able to move the block and the block will resist with friction force in opposite direction of 5N.


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