When is mechanical advantage increased by a first class lever?

Answer 1

The mechanical advantage is when the fulcrum is closer to the effort and creates a advantage

Answer 2

( Please Note: I am using "/" as an abbreviation for "upon" )

We know,

Mechanical Advantage = effort arm/ load arm

Since, the effort arm of a second class lever is always greater than the load arm, therefore the mechanical advantage is always greater than one.

Answer 3

Actual Mechanical Advantage= Force Resistance/Force Effort

Advantage: Can lift very heavy objects with minimal effort. Example: A car jack used to lift a vehicle to change tyres.

Answer 4

because effort arm is longer than the load arm

Answer 5

Move the fulcrum (pivot) closer to the effort arm

Answer 6

When the pivot point (fulcrum) is moved farther from the effort

and closer to the resistance.

Answer 7

when the fulcrum is close to the load

Answer 8

Always less than 1 .