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Mechanical advantage:

Class-I lever . . . can be any positive number

Class-II lever . . . always less than ' 1 ' (and more than zero)

Class-III lever . . . always more than ' 1 '

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Related Questions

What does the machanical advantage of a first class lever depend apon?

The distance from the fulcrum to the effort.


What does the machanical advantage of a first-class lever depend apon?

The mechanical advantage of a first-class lever depends on the relative distances between the effort force, the fulcrum, and the resistance force. The mechanical advantage is calculated as the ratio of the distance from the fulcrum to the effort force to the distance from the fulcrum to the resistance force.


A lever has an input arm 50 centimeters and an output arm 40 centimeters long what is the machanical advantage of the lever?

The mechanical advantage of a lever is calculated by dividing the length of the input arm by the length of the output arm. In this case, the mechanical advantage would be 50 cm (input arm) divided by 40 cm (output arm), which equals 1.25. Therefore, the mechanical advantage of the lever is 1.25.


Why is it useful to use a third class lever with the machanical advantage less then 1?

Here we don't always depend on the number but only the convenience of handling mechanically. First class. Fulcrum in the middle (scissors) Second class : Load is in the middle (nut cracker) Third class: Power is in the middle (forceps)


What is the mechanical advantage formula for a 1st class lever?

The mechanical advantage formula for a 1st class lever is calculated by dividing the distance from the fulcrum to the input force by the distance from the fulcrum to the output force. Mathematically, M.A = input arm length / output arm length.


Which type of lever always increases mechanical advantage?

second class lever


Is a wheelbarrow first class lever second class lever third class lever or fourth class lever?

A wheelbarrow is a second-class lever. In a second-class lever, the load is between the effort (force) and the fulcrum, which allows for a mechanical advantage in lifting and moving heavy loads with less effort.


What is the mechanical advantage of a first-class lever in which the fulcrum is 10 inches from the resistance and 40 inches from the effort?

answer is 4


What is the mechanical advantage of a first class lever in which the fulcrum is 10 inches from the resistance and 40 inches from the effort?

The mechanical advantage of a first class lever is calculated as the ratio of the effort arm to the resistance arm. In this case, the effort arm is 40 inches and the resistance arm is 10 inches, giving a mechanical advantage of 4:1. This means that the lever can multiply the input force by a factor of 4.


Is it possible for a first or second class lever to have a mechanical advantage less than one or for a third class lever to have a mechanical advantage greater than one?

Second class lever. . . . Always greater than 1 . Third class lever . . . . . Always less than 1 . First class lever . . . . . Can be greater than 1 or less than 1 depending on position of fulcrum.


What class or classes of lever always have a mechanical advantage greater than 1?

Class 1 and Class 2 levers always have a mechanical advantage greater than 1. In a Class 1 lever, the input arm is longer than the output arm, while in a Class 2 lever, the output arm is longer than the input arm, resulting in a mechanical advantage greater than 1.


What is the relationship between distance from the fulcrum and the mechanical advantage of a first class lever?

In a first class lever, as the distance from the fulcrum to the point where the input force is applied increases, the mechanical advantage also increases. This means that the lever becomes more efficient at moving a load with less effort.