Chapter 9 – Rotational Dynamics
Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 9 - Rotational Dynamics
A rod of weight w is supported by two parallel knife edges A and B and is in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of mass of the rod is at a distance x from A. The normal reaction on A is
16
Sep
A rod of weight w is supported by two parallel knife edges A and B and is in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of mass of the rod is at a distance x from A. The normal reaction on A is A disc [...]
A uniform circular disc of radius 50 cm at rest is free to turn about an axis which is perpendicular to its plane and passes through its centre. It is subjected to a torque which produces a constant angular acceleration of 2.0 rads^−2. Its net acceleration in ms^−2 at the end of 2.0 s is approximately:
16
Sep
A uniform circular disc of radius 50 cm at rest is free to turn about an axis which is perpendicular to its plane and passes through its centre. It is subjected to a torque which produces a constant angular acceleration of 2.0 rads^−2. Its net acceleration in ms^−2 at the end of 2.0 s is [...]
A rope is wound around a hollow cylinder of mass 3kg and radius 40cm. What is the angular acceleration of the cylinder if the rope is pulled with a force of 30N?
16
Sep
A rope is wound around a hollow cylinder of mass 3kg and radius 40cm. What is the angular acceleration of the cylinder if the rope is pulled with a force of 30N? A rope is wound around a hollow cylinder of mass 3kg and radius 40cm. What is the angular acceleration of the cylinder if [...]
A small object of uniform density rolls up a curved surface with an initial velocity v′. It reaches up to a maximum height of 4g/3v^2 with respect to the initial position. The object is
16
Sep
A small object of uniform density rolls up a curved surface with an initial velocity v′. It reaches up to a maximum height of 4g/3v^2 with respect to the initial position. The object is A small object of uniform density rolls up a curved surface with an initial velocity v′. It reaches up to a [...]
The ratio of the acceleration for a solid sphere (mass ′m′ and radius ′R′) rolling down an incline of angle ‘θ’ without slipping and slipping down the incline without rolling is.
16
Sep
The ratio of the acceleration for a solid sphere (mass ′m′ and radius ′R′) rolling down an incline of angle ‘θ’ without slipping and slipping down the incline without rolling is. The ratio of the acceleration for a solid sphere (mass ′m′ and radius ′R′) rolling down an incline of angle 'θ' without slipping and [...]
A disc and a solid sphere of same radius but different masses roll off on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?
16
Sep
A disc and a solid sphere of same radius but different masses roll off on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ? A disc and a solid sphere of same radius but different masses roll off on two [...]