 # Physics Revision Notes For Class 11 Chapter 4 Motion in a Plane

Students can find the class 11 physics revision notes chapter 4 motion in a plane here. These notes comprise all the explanation with short notes about motion. They will find the difference between scalar and vector quantities and along with that, they will find the definition of various terms such as unit, coplanar and displacement vectors etc.

## CBSE Notes Class 11 Physics Chapter 4 Motion in a Plane

This note provides important formulas such as triangle law of vector addition, polygon law of vector addition.and also see some theorems such as Lami’s theorem along with definition on angular acceleration, angular velocity, centripetal acceleration etc. These notes are very important for preparation in exams.

## Frequently asked Questions on CBSE Class 11 Physics Notes Chapter 4: Motion in a plane

### What is ‘Angular Velocity’?

Time rate at which an object rotates, or revolves, about an axis, or at which the angular displacement between two bodies changes is called angular velocity.

### What is ‘Lami’s theorem’?

Lami’s Theorem states, “When three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two forces”.

### What are ‘Vectors’?

Vectors are geometrical entities that have magnitude and direction.