Question

The fulcrum of a lever is the point on which it turns. Based on the function, how many pounds of force are needed to lift the rock if the distance from the fulcrum is 6 feet?

Answer 1

Answer: 10 pounds of force

Answer 2

10 lb of force are needed to lift the rock if the distance from the fulcrum is 6 feet.

Explanation:

From the given graph it is clear the curve passing through the point (1.5,40), (2,30), (2.5,24), (3,20) and (4,15).

These points satisfy by the equation

`y=(60)/(x)`

where, x is the distance in feet from the fulcrum and y is needed force in pounds.

Put x=6 in this equation,

`y=(60)/(6)=10`

Therefore, 10 lb of force are needed to lift the rock if the distance from the fulcrum is 6 feet.