Chapter 11 – Rotational Motion

In the figure (i) half of the meter scale is made of wood while the other half, of steel. The wooden part is pivoted at O. A force F is applied at the end of steel part. In figure (ii) the steel part is pivoted at O and the same force is applied at the [...]

Two men support a uniform horizontal beam at its two ends, if one of them suddenly lets go, the force exerted by the beam on the other man will if one of them suddenly lets go the force exerted by the beam on the other man will Two men support a uniform horizontal beam at [...]

A uniform rod of length l and mass m is free to rotate in a vertical plane about A as shown in Fig. The rod initially in horizontal position is released. The initial angular acceleration of the rod will be The angle turned by a body undergoing circular motion depends on time as θ=θ0+θ1t+θ2r^2. Then [...]

A constant torque of 31.4N−m id exerted on a pivoted wheel. If the angular acceleration of the wheel is 4πrad/s^2, then the moment of inertia of the wheel is A constant torque of 31.4N−m id exerted on a pivoted wheel. If the angular acceleration of the wheel is 4πrad/s^2 then the moment of inertia of [...]

The instantaneous angular position of a point on a rotating wheel is given by the equation θ(t)=2t^3−6t^2. The torque on the wheel becomes zero at The instantaneous angular position of a point on a rotating wheel is given by the equation θ(t)=2t^3−6t^2. The torque on the wheel becomes zero at October 23, 2020 Category: Cengage [...]

Find the torque of a force F = -3i+j+5k acting at the point r = 7 i+3j+k Find the torque of a force F = -3i+j+5k acting at the point r = 7 i+3j+k October 23, 2020 Category: Cengage NEET by C.P Singh , Chapter 11 - Rotational Motion , Part 1 ,

A flywheel rotates about an axis. Due to friction at the axis, it experiences an angular retardation proportional to its angular velocity. If its angular velocity falls to half while it makes n rotations, how many more rotations will it make before coming to rest? A flywheel rotates about an axis. Due to friction at [...]

The angle turned by a body undergoing circular motion depends on time as θ=θ0+θ1t+θ2r^2. Then the angular acceleration of the body is The angle turned by a body undergoing circular motion depends on time as θ=θ0+θ1t+θ2r^2. Then the angular acceleration of the body is October 23, 2020 Category: Cengage NEET by C.P Singh , Chapter [...]

A wheel is subjected to uniform angular acceleration about its axis. Initially, its angular velocity is zero. In the first 2sec, it rotates through an angle θ1, in the next 2sec, it rotates through an angle θ2. The ratio of θ2/θ1 is A wheel is subjected to uniform angular acceleration about its axis. Initially in [...]

A fan is making 600 revolutions per minute. If after some time it makes 1200 revolutions per minute, then the increase in its angular velocity is A fan is making 600 revolutions per minute. If after some time it makes 1200 revolutions per minute then the increase in its angular velocity is October 23, 2020 [...]