JEE MainPhysicsRotational MotionMCQ+4 / −1
Four point masses, each of mass m, are fixed at the corners of a square of side . The square is rotating with angular frequency , about an axis passing through one of the corners of the square and parallel to its diagonal, as shown in the figure. The angular momentum of the square about this axis is : 

- A3m 2
- B4m 2
- Cm 2
- D2m 2
More from Rotational Motion
- The linear mass density of a thin rod AB of length L varies from A to B as , where x is the distance from A. If M is the mass of the rod then its moment of inertia…2020 · MCQ
- As shown in the figure, a bob of mass m is tied by a massless string whose other end portion is wound on a fly wheel (disc) of radius r and mass m. When released from rest the bob starts falling vertically. When it has covered a distance… Includes diagram2020 · MCQ
- The radius of gyration of a uniform rod of length , about an axis passing through a point away from the centre of the rod, and perpendicular to it, is :2020 · MCQ
- Consider a uniform cubical box of side a on a rough floor that is to be moved by applying minimum possible force F at a point b above its centre of mass (see figure). If the coefficient of friction is = 0.4, the maximum possible value… Includes diagram2020 · Numerical
- Mass per unit area of a circular disc of radius depends on the distance r from its centre as = A + Br . The moment of inertia of the disc about the axis, perpendicular to the plane and assing through its…2020 · MCQ
- Consider a uniform rod of mass M = 4m and length pivoted about its centre. A mass m moving with velocity v making angle to the rod's long axis collides with one end of the rod and sticks to it. The angular…2020 · MCQ
- A uniform sphere of mass 500 g rolls without slipping on a plane horizontal surface with its centre moving at a speed of 5.00 cm/s. Its kinetic energy is :2020 · MCQ
- A body of mass m = 10 kg is attached to one end of a wire of length 0.3 m. The maximum angular speed (in rad s–1) with which it can be rotated about its other end in space station is : (Breaking stress of wire = 4.8 × 107 Nm–2 and area of…2020 · Numerical