Question

If the distance between fulcrum and effort is more in a first order type lever, then :
A: load can be lifted with less effort.
B: load has to be lifted with greater effort
C: load should be equal to effort
D: load should always be less than effort

Answer 1

Hint: When we consider any system like a beam where forces are applied, the effort and load, which is the input and output force respectively, are applied to either ends of the beam. The fulcrum is the pivotal point of the system. We should consider the distance between the pivotal point and the end.

Complete step by step answer:
In terms of the applied force, the fulcrum is said to be between the force of resistance and the force of effort. In a first order type lever or a class one lever, the force of effort multiplied by the distance of the effort from the fulcrum gives us the value of the force of resistance multiplied with its distance from the fulcrum.
So when the distance between fulcrum and the effort is more, there will be less resistance and the load can be lifted without applying much effort.
Hence, the load can be lifted with less effort. Option A is the correct answer among the given options.

Note:There are many examples of levers in our day to day lives. Pliers are the best example for a class one lever that is mentioned above. Other examples include fishing rods, shovels, boat oars, crow bars, wheelbarrows, arms, brooms and so on.