Fill in the blanks:

1. A disc is spinning with an angular velocity w rad/sec about the axis of pin. The coupled to the causing precession will be .......
2. The swaying couple is due to the ...... unbalanced force.
3.All pairs are ....... pair in a pantograph.
4.In a ...... cam, the follower moves in direction perpendicular to the cam axis.

Radial cam

All pairs are ....... pair in a pantograph

1. A disc is spinning with an angular velocity w rad/sec about the axis of pin. The coupled to the causing precession will be proportional to the angular velocity and the moment of inertia of the disc.

To calculate the magnitude of the coupled torque, you can use the formula:

Torque = Angular Velocity * Moment of Inertia

The moment of inertia depends on the shape and mass distribution of the spinning disc. You'll need to know the specific properties of the disc to calculate the exact value of the coupled torque.

2. The swaying couple is due to the net unbalanced force acting on a rotating object. When an object rotates, the forces acting on it might not be balanced, leading to a net force that causes swaying or wobbling motion.

To calculate the swaying couple, you need to determine the net unbalanced force acting on the object. This can be done by analyzing the forces acting on the object and their position relative to the axis of rotation. Once you have the net force, you can multiply it by the perpendicular distance from the axis of rotation to calculate the swaying couple.

3. All pairs are turning pairs in a pantograph.

In a pantograph, which is a mechanical linkage typically used for copying and tracing, all the pairs of links are turning pairs. This means that the joints or connections between the links allow them to rotate relative to each other.

Since all pairs in a pantograph are turning pairs, the motion of the links is typically rotational rather than translational.

4. In a translating cam, the follower moves in a direction perpendicular to the cam axis.

A cam mechanism is used to convert rotational motion into linear motion. There are different types of cams, including translating cams and oscillating cams.

In a translating cam, the cam surface is shaped in such a way that it causes the follower (a mechanism that follows the cam surface) to move in a direction perpendicular to the axis of the cam. This results in linear motion of the follower.

To visualize this, imagine a flat disk-shaped cam with a groove or bump on its surface. As the cam rotates, the follower, which is in contact with the cam surface, moves up and down or side to side depending on the shape of the cam.