Pe GCSE (lever systems)

Mechanical advantage is when?

• The load is equal distance from the fulcrum

• The load is closer to the fulcrum than the effort

• The effort is closer to the load than the fulcrum

What is mechanical advantage?

• Mechanical Advantage is when a large load can be lifted with relatively little effort. It is usually due to effort and the load being a relatively long distance away from one another.

• Mechanical Advantage is when a large load can be lifted with relatively little effort. It is usually due to effort and the load being a relatively short distance away from one another.

What is the equation for mechanical advantage?

• Mechanical Advantage = Effort Arm x Resistance Arm

• Mechanical Advantage = Effort Arm - Resistance Arm

• Mechanical Advantage = Effort Arm ÷ Resistance Arm

• ^{Mechanical Advantage = Effort Arm + Resistance Arm}

Which of the following acts as a pivot or fulcrum in the body?

• joints

• muscles

• bones

which class of lever is this?

• 1st

• 2nd

• 3rd

A sit up is an example of which class of lever?

• 1st

• 2nd

• 3rd

A press up is an example of which class of lever?

• 1st

• 2nd

• 3rd

in the action of standing on your tip-toes, which part of the body acts as the fulcrum?

• gastrocnemius

• metatarsals

• ankle joint

• tibia

which abbreviation represents levers in the order in 1st,2nd,3rd

• FEL-ELF-EFL

• ELF-FEL-EFL

• FEL-EFL-ELF

• EFL-ELF-FEL

What is a fulcrum?

• The fixed point that the lever turns on, or is supported by. It is where movement stems from.

• The weight or resistance

• The force needed to create the movement