Torque

A uniform wooden beam AB, $80 \mathrm{cm}$ long and weighing $200 \mathrm{gf}$, is supported on a wedge as shown in the figure. Calculate the greatest weight which can be placed on end A without causing the beam to tilt.

Find the relation between angular momentum and torque.

A uniform rectangular box of dimensions $(40 \mathrm{cm} \times 20 \mathrm{cm})$ is kept on a horizontal smooth surface at a distance $10 \mathrm{m}$ from a wall. A constant force $F$ has to applied horizontally at the highest point as shown. The minimum time (in seconds) to reach the wall without causing the box to rotate is

A uniform rod of mass m and length l is suspended by two inextensible strings at A and B. If the string at B suddenly breaks find tension in the string at A immediately after the break.

A particle of mass M tied to a string of length L is rotating along a circular path with constant speed $\mathrm{\vartheta }$. The torque on the particle is

The $747$ Boeing plane is landing at a speed of $70 \mathrm{m}/\mathrm{s}$. Before touching the ground, the wheels are not rotating. How long a skid mark do the wing wheels leave?

When a tree is cut, the cut is made on the side facing the direction in which the tree is required to fall. Why?

The instantaneous angular position of a point on a rotating wheel is given by the equation $\theta \left(t\right)=2t^3-6t^2$ The torque on the wheel become zero at $t=0.5 \mathrm{s}$.

Obtain an expression for torque acting on rotating body with constant angular acceleration.

A solid sphere of diameter $25 cm$ and mass $25 kg$rotates about an axis through its centre. Calculate its moment of inertia, if its angular velocity changes from $2 rad/s$ to $12 rad/s$ in $5$ second. Also calculate the torque applied.

A circular disc of mass $10kg$ and radius $0.2m$ is set into rotation about an axis passing through its centre and perpendicular to its plane by applying torque $10Nm.$ Calculate angular velocity of the disc that it will attain at the end of $6$s from the rest.

Which physical quantity is represented by the product of the moment of inertia and angular acceleration?

Torque is given by the _____ order time derivative of angular displacement.

Assign a single word name to the moment of a force.

The SI unit of the moment of force is $\mathrm{N} \mathrm{m}$.

Which of the following was NOT a duty of the nobility in medieval Europe?

Which of the following titles was commonly associated with the nobility in medieval Europe?

In which mode of entry into international business does a company allow a foreign company to use its intellectual property for a fee?

In the Southern Hemisphere, which direction does the Coriolis force deflect the wind?

What is the term used for the angle at which an aerial photograph is taken?