How is the mechanical advantage related to the velocity ratio for?

The mechanical advantage for an actual machine is equal to the product of its efficiency and velocity ratio. The efficiency of such a machine is always less than 1, i.e. h<1. This is because there is always some loss in energy in form of friction etc.

Why mechanical advantage is less than the velocity ratio for an actual machine?

The mechanical advantage(M.A) of a real machine is always less than its velocity ratio(V.R) because mechanical advantage decreases due to the friction and weight of moving parts of the machine whereas the velocity ratio remains constant.

Can a machine be 100\% efficient if not explain why?

Answer: A machine cannot be 100 percent efficient because output of a machine is always less than input. A certain amount of work done on a machine is lost to overcome friction and to lift some moving parts of the machine.

What is the ratio of mechanical advantage to the velocity ratio of simple machine?

Efficiency = Mechanical Advantage / Velocity ratio. In an ideal machine (with no friction), the efficiency = 1, also known as 100\%.

What is mean by efficiency of a machine is 80\%?

The efficiency of a machine is simply the ratio of work output to the work input. The efficiency of the machine can never be 100\% . Work done by the machine is nothing but the displacement of the body due to externally applied force with the help of a machine.

What is velocity ratio of actual machine?

In a simple mechanism, it is also defined as the ratio of mechanical advantage to the velocity ratio. In an ideal machine, efficiency is 100\% or unity so the mechanical advantage is equal to the velocity ratio.

Why is velocity ratio not affected by friction?

Velocity ratio of simple machine is the ratio of distance travelled by the effort to the distance travelled by theload in the machine. As velocity ratio or ideal mechanical advantage is a simple ratio of two distances, it also does not have the unit. The friction is not involved in it.

What is the ratio of mechanical advantage to the velocity ratio of a simple machine?

What is a mechanical advantage less than 1?

Mechanical Advantage < 1. A machine with a mechanical advantage of less than 1 does not multiply the force but increases the distance and speed.

What is the difference between mechanical advantage and mechanical efficiency?

The mechanical advantage (MA) of a machine is the factor by which it multiplies any applied force. The efficiency of any machine measures the degree to which friction and other factors reduce the actual work output of the machine from its theoretical maximum. A frictionless machine would have an efficiency of 100\%.

Why is mechanical advantage less than velocity ratio?

The mechanical advantage(M.A) of a real machine is always less than its velocity ratio(V.R) because mechanical advantage decreases due to the friction and weight of moving parts of the machine whereas the velocity ratio remains constant. Because of friction, air resistance, this Ideal situation would never be achieved.

Is gear ratio the same as mechanical advantage?

The gear ratio can be calculated directly from the numbers of teeth on the gears in the gear train. The torque ratio of the gear train, also known as its mechanical advantage, is determined by the gear ratio. The speed ratio and mechanical advantage are defined so they yield the same number in an ideal linkage.

What is the difference between mechanical advantage and efficiency?

measure of how much your force is multiplied, efficiency is a measure of how much of the work you do actually goes to moving the thing you’re trying to move. Adding more pulleys may increase the mechanical advantage, but it also increases the amount of extra stuff you’re moving.

What is the formula for velocity ratio?

Velocity ratio is the comparison between the amount of force an object creates and the force around it that acts against the object. Velocity ratio is calculated by dividing the force working against the object with the force exerted by the object.

What is mechanical advantage?

The actual mechanical advantage of a machine reflects the increase or decrease in force achieved by the machine.