Mechanical Advantage is equal to
EffortLoad
LoadEffort
Load×Effort
Load+Effort
A mechanical advantage is the ratio of the working force exerted by a mechanism (Load) to the applied force (Effort).
Mechanical Advantage=LoadEffort
In a machine, a load of 490 N is supported by an effort of 7N. If the distance of fulcrum from the point where the load acts is 10m, find the mechanical Advantage and length of the effort arm.
A crowbar of length 120 cm has its fulcrum situated at a distance of 20 cm from the load. Calculate the effort arm and the mechanical advantage of the crowbar.
When the effort arm is equal to the load arm the mechanical advantage is equal to one.