Give One Example of a Class I Lever Where Mechanical Advantage is More than One ?

Give one example of a class I lever where mechanical advantage is more than one ?

More than one: shears used for cutting the thin metal sheets .

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Name a machine to obtain gain in speed?

shows a nut cracker name the class of lever ?

Class II levers are designed to have ______.

A man uses a crowbar of length 1.5 m to raise a load of 75 kgf by putting a sharp edge below the bar at a distance 1 m from his hand.

Draw a diagram of the arrangement showing the fulcrum (F), load (L) and effort (E) with their directions.
State the kind of lever.
Calculate:
1. load arm,
2. effort arm,
3. mechanical advantage and
4. the effort needed.

A lever of length 9 cm has its load arm 5 cm long and the effort arm is 9 cm long.

To which class does it belong?
Draw a diagram of the lever showing the position of fulcrum F and directions of both the load L and effort E.
What is the mechanical advantage and velocity ratio if the efficiency is 100%?
What will be the mechanical advantage and velocity ratio if the efficiency becomes 50%?

Give three examples for leavers of the third order.

The following belong to which class of lever?

The Physical balance

The following belong to which class of lever?

A see-saw

What is a lever?

The diagram shows the use of a lever.

State the principle of moments as applied to the above lever.
Which class of lever is this? Give an example of this class of lever.
If FA = 100 cm, AB = 90 cm, calculate the minimum effort required to lift the load.