Chapter 9 – Rotation

Two uniform rods of equal length but different masses are rigidly joined to form an L-shaped body, which is then pivoted about O as shown in the figure. If the system is in equilibrium in the shown configuration. Then the ratio M/m will be: Two uniform rods of equal length but different masses are rigidly [...]

A wheel of radius R rolls on the ground with a uniform velocity v. The relative acceleration of topmost point of the wheel with respect to the bottom most point is A wheel of radius R rolls on the ground with a uniform velocity v. The relative acceleration of topmost point of the wheel with [...]

The linear velocity perpendicular to radius vector of a particle moving with angular velocity ω=2ˆK at position vector r=2ˆi+2ˆj is. The linear velocity perpendicular to radius vector of a particle moving with angular velocity ω=2ˆK at position vector r=2ˆi+2ˆj is. November 26, 2020 Category: Arihant Physics by D.C Pandey , Chapter 9 - Rotation , [...]

A billiard ball of mass m and radius r, when hit in a horizontal direction by a cue at a height h above its centre, acquired a linear velocity v0​. The angular velocity ω0​ acquired by the ball is A billiard ball of mass m and radius r acquired a linear velocity v0​. The angular [...]

A uniform rod of mass m and length l is suspended by two light inextensible strings as shown in figure .Tension in one string immediately after the other string is cut is A uniform rod of mass m and length l is suspended by two light inextensible strings as shown in figure .Tension in one [...]

A homogeneous cylinder of mass M and radius r is pulled on a horizontal plane by a horizontal force F acting through its centre of mass. Assuming rolling without slipping, find the angular acceleration of the cylinder, A homogeneous cylinder of mass M and radius r is pulled on a horizontal plane by a horizontal [...]

A force F is applied at the top of a ring of mass M and radius R placed on a rough horizontal surface as shown in figure. Friction is sufficient to prevent slipping. The friction force acting on the ring is: An inclined plane makes an angle of 60∘ with horizontal. A disc rolling down [...]

An inclined plane makes an angle of 60∘ with horizontal. A disc rolling down this inclined plane without slipping has alinear acceleration equal to: An inclined plane makes an angle of 60∘ with horizontal. A disc rolling down this inclined plane without slipping has alinear acceleration equal to: November 26, 2020 Category: Arihant Physics by [...]

A rigid spherical body is spinning around an axis without any external torque. Due to temperature its volume increases by 3%.Then percentage change in its angular speed is A rigid spherical body is spinning around an axis without any external torque. Due to temperature its volume increases by 3%.Then percentage change in its angular speed [...]

A circular platform is mounted on a vertical frictionless axle. Its radius is `r = 2 m` and its moment of inertia`I = 200 kg m^2`. It is initially at rest. A `70 kg` man stands on the edge of the platform and begins to walk along the edge at speed `v_0 = 1 m [...]