Question

_____=length of class 2 lever​

Answer 1

Explanation:

In second class levers the load is between the effort (force) and the fulcrum. A common 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.

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Answer 2

Answer:

The length of a lever is 2 m. Calculate its mechanical advantage if the fulcrum is situated at a distance of 40 cm from the effort.

Length of the lever 2m=200 cm

Length of the effort arm  40 cm

Length of the load arm 200 cm−40 cm=160 cm

Mechanical advantage ?

We know that,

Mechanical advantage= Length of the effort arm / Length of the load arm 

MA=160 cm40 cm=0.25