Question 1 :
A book is lying on a table, what is the angle between the book on the table and the weight of the book?
Question 3 :
The moment of inertia of a disc of radius 0.5 m about its geometric axis is 2 kg-$m^2$. If a string is tied to its circumference and a force of 10 Newton is applied, the value of torque with respect to this axis will be :-
Question 4 :
The energy of electron in an excited hydrogen atom is -3.4 eV. Its angular momentum according to Bohr's theory will be:<br/>
Question 5 :
Solid sphere, hollow sphere, solid cylinder and hollow cylinder of same mass and same radii simultaneously start rolling down from the top of an inclined plane. The body that takes longest time to reach the bottom is:<br/>
Question 6 :
A closed tube partially filled with water lies in a horizontal plane. If the tube is rotated about perpendicular bisector, the moment of inertia of the system will
Question 9 :
A flywheel rotates at a constant speed of $3000\ rpm$. The angle described by the shaft in radian in one second is:<br/>
Question 10 :
A solid sphere is rolling down on inclined on plane from rest and a rectangular block of same mass is also slipping down simultaneously from rest on a similar smooth inclined plane.
Question 11 :
A thin uniform wire of mass $m$ and length $l$ is bent into a circle. The moment of the inertia of the wire about an axis passing through its one end and perpendicular to the plane of the circle is:
Question 12 :
In which of the following cases of rolling body, translatory and rotational kinetic energies are equal <br/>
Question 13 :
A motor cyclist takes a U-turn in $4$ seconds. His angular velocity will be _______ $rads^{-1}$.<br/>
Question 14 :
The radius of a solid sphere is $R$ and its density $D$. When it is made to rotate about an axis passing through any diameter of sphere, then the expression for its moment of inertia is:<br/>
Question 15 :
For a bowling ball, how far apart are the center of gravity and center of mass?<br>
Question 16 :
A body executing uniform circular motion has find its position vector and acceleration vector:
Question 17 :
A particle of mass m is revolving in a horizontal circle of radius r with constant angular speed $\omega $. The areal velocity of the particle is:<br/>
Question 18 :
One oscillation completed by a vibrating body in one second is known as:
Question 20 :
The law of conservation of angular momentum is obtained from Newton's II law in rotational motion when:<br/>