# What Is Velocity Ratio Of A Machine?

Author: Lorena
Published: 7 Dec 2021

### The Power of a Car

Reducing the forces on the car can be done by increasing the engine's power. Smoother roads with less friction, tires that provide better surface traction, and a lighter car all contribute to reducing the velocity ratio and improving the car's performance and efficiency. More efficient cars have more work done with less power.

There can never be a perfect machine. Cars and a system have waste. The majority of the waste a car puts out is heat.

### The Velocity Ratio of an Inclined Plane

Work output is the same as work input for ideal or perfect machines. The ratio of distance travelled by effort to the distance travelled by load in a machine is called the svelte ratio. The machine has a force ratio of 5.

The distance moved by the load is five times the distance moved by the effort, and the load is five times the effort. The theoretical mechanical advantage of a system is the ratio of the force that performs the useful work to the force applied, assuming there is no friction in the system. The ratio of the distance moved by effort and load in the same time interval is called the vechicle ratio.

### The ideal machine

It is not possible to have a machine that is more efficient than 100% if the mechanical advantage is greater than the velocity ratio. An ideal machine is one that is light and does not have any energy dissipated. The work output is equal to the work input.

A pair of scissors is used to cut a piece of cloth by keeping it at a distance of 8.0 cm from the rivet and then applying an effort of 10 kilof to the cloth. A load of 18 kilof is suspended at a point 60 cm from the support on the shorter arm, as a 4 m long rod is balanced. The center of gravity at A is the point where the horizontal distance is 20 cm and the AC is 40 cm.

How is the mechanical advantage related to the machine? If the efficiency is less than 1 or more than 1, then it is not a machine. The side of the scale with the weight on it is 10 cm, while the side of the effort with the arm is 30 cm.

To balance the scale, weight W of scale should be more than effort. There is no mechanical advantage in the case of a single pulley. A single fixed pulley can be used to change the direction of force applied, the effort can be applied in a more convenient direction.

It is difficult to raise a load directly upwards. When a single pulley has a mechanical advantage greater than 1 the force needs to be applied in the direction of the pulley. How can you change the direction of force without changing its mechanical advantage?

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