CBSE Class 11-science - Kinematic Variables in Rotation Videos
Systems of Particles and Rotational Motion
This video explains axis of rotation, angular displacement, angular velocity and the relation between linear velocity and angular velocity.
- Define average angular velocity. Write its units and dimensions.
-
Write a relation between linear velocity (
) , angular velocity (
and radius of the circle (r)?
Write the relation between angular acceleration (
and linear acceleration (a)?
- A wheel rotates with a constant angular acceleration of 3.6 rad/s2. If the angular velocity of the wheel is 4.0 rad/s at t0 = 0, what angle does the wheel rotate in 1 s? What will be its angular velocity at t = 1s?
-
Considering rotational motion about some fixed axis, write equations corresponding to :
(i)
- What are the characteristics of cross product?
-
Find the area of triangle whose vertices are P
(1,1,1), Q (2,2,2) and R(2,-1,2).
-
A tube of length l is filled with a liquid of density
. Find the force experienced at one of its edge if rotated about the other edge with an angular velocity 
- Define the vector product of two vectors. Give one example.
-
Calculate the area of a parallelogram whose adjacent sides are given by the vectors :
- A body of mass 10 kg explodes into three masses in the ratio 2 : 3 : 5. Two light fragments fly off at right angle with velocity 12 m/s and 8 m/s. Find the velocity of third fragment.
