Question

What should you do to reduce the amount of effort needed to lift something using a first class lever?

• A. move the fulcrum closer to the effort
• B. move the fulcrum to the middle of the lever
• C. move the fulcrum closer to the load
• D. none of the above

Answer 1

Answer: (B)

move the fulcrum to the middle of the lever

Move the fulcrum close to the load to reduce the amount of effort needed to lift something using a first class lever.If, we move the fulcrum towards the effort end, the length of effort arm will reduce and that of load arm will increase, resulting in a lower mechanical advantage and necessitating more effort to do the same amount of work.As a result, the mechanical advantage is more (and less effort would be required).

Option B is correct.