Chapter 6 – System of Particles and Rotational Motion

A uniform disc of radius R and mass m is resting on a table on its rim, the coefficient of friction between the disc and the table is μ. Now the disc is pulled with a force F as shown in the figure. What is the maximum value of F for which the disc rolls [...]

Two discs of moments of inertia I1and I2 about their respective axes (normal to the disc and passing through the centre) and rotating with angular speeds ω1 and ω2 are brought into contact face to face with their axes of rotation coincident. Which of the following points is the likely position of the centre of [...]

A door is hinged at one end and is free to rotate about a vertical axis [Fig.] Does its weight cause any torque about the axis ? Given reason for you answer. A door is hinged at one end and is free to rotate about a vertical axis [Fig.] Does its weight cause any torque [...]

The variation of angular position θ, of a point on a rotating rigid body, with time t is shown in Fig. Is the body rotating clock wise or anti-clockwise ? of a point on a rotating rigid body The variation of angular position θ with time t is shown in Fig. Is the body rotating [...]

Why does a solid sphere have smaller moment of inertia than a hollow cylinder of same mass and radius, about an axis passing through their axes of symmetry ? about an axis passing through their axes of symmetry ? Why does a solid sphere have smaller moment of inertia than a hollow cylinder of same [...]

With reference to Fig. of a cube of edge a and mass m, state whether the following are true or false. (O is the centre of the cube.) state whether the following are true or false. (O is the centre of the cube.) With reference to Fig. of a cube of edge a and mass [...]

Figure shows a lamina in x−y plane. Two axes z and z’ pass perpendicular to its plane. A force F acts in the plane of lamina at point P as shown. Which of the following statements are true ? (The point P is closer to z’−axis than the z-axis). Which of the following points is [...]

The net external torque on a system of particles about an axis is zero. Which of the following are compatible with it? The net external torque on a system of particles about an axis is zero. Which of the following are compatible with it? November 27, 2020 Category: Chapter 6 - System of Particles and [...]

A uniform square plate has a small piece Q of an irregular shape removed and glued to the centre of the plate leaving a hole behind in figure. The moment of inertia about the z-axis is then, A uniform square plate has a small piece Q of an irregular shape removed and glued to the [...]

When a disc rotates with uniform angular velocity, which of the following is not true ? When a disc rotates with uniform angular velocity which of the following is not true ? November 27, 2020 Category: Chapter 6 - System of Particles and Rotational Motion , NCERT Exemplar Class 11 , Physics ,