Torque

When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be

A disc is spinning with an angular velocity $? \raisebox{1ex}{$\mathrm{rad}$}\!\left/ \!\raisebox{-1ex}{$\sec $}\right.$ about the axis of spin. The couple applied to the disc causing precession will be

In an automobile, if the vehicle makes a left turn, the gyroscopic torque

The rotor of a ship rotates in clockwise direction when viewed from the stern and the ship takes a left turn. The effect of the gyroscopic couple acting on it will be 

A disc spinning on its axis at $20 \raisebox{1ex}{$\mathrm{rad}$}\!\left/ \!\raisebox{-1ex}{$\sec $}\right.$ will undergo precession when a torque $100 \mathrm{N}-\mathrm{m}$ is applied about an axis normal to it at an angular speed, if mass moment of inertia of the disc is the $1 \mathrm{kg}-{\mathrm{m}}^2$-

A force $\overrightarrow{F}$ is acting at a point with a position vector $\overrightarrow{r}$ with respect to origin O. Both the vectors lie in the X-Y plane. The direction of torque $\overrightarrow{\tau }$of the force about the origin will be:

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 $t=0.5 \mathrm{s}$.

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 $\mathrm{N} \mathrm{m}$.

A crowbar of length $120 \mathrm{cm}$ has its fulcrum situated at a distance of $20 \mathrm{cm}$ from the load. The mechanical advantage of the crowbar is

The rotational analogue of force in linear motion is :

If the system shown below is at rest find $PR$ 

In order to open a door, a boy applies a force of 50 N on its handle in a direction normal to the plane of the door. If the applied force acts at a distance of 0^.6 m from the hinges, find the torque of the force