The force which opposes an external force acting on a body while it is still at rest is called:

Static friction

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

Sliding friction

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

Magnetic force

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

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
Static friction

When an external force acts on a block at rest, static friction opposes the relative motion between the surfaces. The body starts to move only when external force exceeds maximum static frictional force (also called limiting friction).

Suggest Corrections

Similar questions

Q. The force which opposes an external force acting on a body while it is still at rest is called .

Q. A wooden block kept on concrete was initially at rest. When a force of 20 N acts on it, the block starts to move in the direction of force. Which of the following is correct for the friction on the block when it is moving?

Q. If an external force and the frictional force are acting on a body, which is in rest on the floor, and are equal and opposite, then the frictional force is:

Question 8
Answer the following questions:
A. Why is sliding friction less than static friction between the same surfaces?
B. A book of mass 1 kg is kept at rest on a table. The maximum value of static friction is 200 N and sliding friction is 180 N.
i. If we apply a force of 190 N, will the body move?
ii. If we apply a force of 210 N, will the body move?

Q. Answer the following question:

A. Why is sliding friction less than static friction for the same surface?

B. A book of mass 1 kg is at rest on the table. Maximum value of static friction is 5N and sliding friction is 4N.
Now, Answer:

i. If we apply a force of 4.5N will the body move from rest?
ii. If we apply a force of 6N will the body move from rest?
[5 MARKS]

Join BYJU'S Learning Program

The force which opposes an external force acting on a body while it is still at rest is called:

The correct option is A Static friction When an external force acts on a block at rest, static friction opposes the relative motion between the surfaces. The body starts to move only when external force exceeds maximum static frictional force (also called limiting friction).

The correct option is A
Static friction

When an external force acts on a block at rest, static friction opposes the relative motion between the surfaces. The body starts to move only when external force exceeds maximum static frictional force (also called limiting friction).