Name: Types of Simple Machines
Uploaded: 2019-07-19
Duration: 2 min 37 s
Description: Here is an interesting video on six types of simple machines which makes our work easier in our regular activity. Jump into this to know more on these machines.

Question

Define the three kinds of levers. Draw diagrams to show the position of the fulcurum, load, and effort in each of them.

Accepted Answer

A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. The kinds of lever are:
First-Class Levers:

In the first-class lever, the fulcrum is located between the effort and the load.

The seesaw is a good example of the first-class lever.

Crowbars, Scissors, and pliers are common examples of this class of lever.

Second-Class Levers:

The second-class lever has the fulcrums at one end, the load is at the middle and the effort is applied at the other end.

Example is a wheelbarrow where the effort moves a large distance to lift a heavy load, with the axle and wheel as the fulcrum.

Nutcrackers are also an example of a second-class lever.

Third Class Lever:

When the effort is between the load and the fulcrum, then it is a third-class lever.

Broom, barbecue tongs and a fishing rod are some examples of the third-class lever.

In a third-class lever, the mechanical advantage is low.

Define the three kinds of levers. Draw diagrams to show the position of the fulcurum, load, and effort in each of them.

Important Questions on Simple Machines

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