A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. What is the mechanical advantage of the lever?

What is the ideal mechanical advantage of the lever? What is the efficiency of the lever? Show your work.

A basket of neglible wieght hangs from a vertical spring scale of constant force 1500N/m. If you sundally put a 3.0 Kg adobe brick in the basket, find the maximum distance that the spring will stretch. If, instead, you released the brick from 1.0 m above the basket, by how much will the spring stretch at its maximum elongation?

To find the mechanical advantage of the lever, we can use the formula:

Mechanical Advantage = Load Distance / Effort Distance

In this case, the Load Distance is 0.250 m and the Effort Distance is 1.00 m. Thus, the Mechanical Advantage is:

Mechanical Advantage = 0.250 m / 1.00 m
= 0.25

So, the mechanical advantage of the lever is 0.25.

The ideal mechanical advantage of a lever is calculated using the formula:

Ideal Mechanical Advantage = Fulcrum Distance / Load Distance

In this case, the Fulcrum Distance is 1.00 m and the Load Distance is 0.250 m. Therefore, the Ideal Mechanical Advantage is:

Ideal Mechanical Advantage = 1.00 m / 0.250 m
= 4

So, the ideal mechanical advantage of the lever is 4.

Finally, to find the efficiency of the lever, we can use the formula:

Efficiency = (Actual Mechanical Advantage / Ideal Mechanical Advantage) x 100

In this case, the Actual Mechanical Advantage is 0.25 and the Ideal Mechanical Advantage is 4. Therefore, the Efficiency is:

Efficiency = (0.25 / 4) x 100
= 6.25

So, the efficiency of the lever is 6.25%.