mechanical advantage

Question 1

what is mechanical advantage

Answer 1

Short effort arm = fast movements over a large range
of movement

Short resistance arm = able to move more weight

Question 2

how is mechanical advantage calculated

Answer 2

Mechanical advantage = effort arm ÷ resistance arm

Question 3

which class levers have a much shorter effort arm then resistance

Answer 3

1st & 3rd

Question 4

which lever system has a shorter resistance arm than effort arm

Answer 4

2nd