Input force — Science definition
The force applied to a machine.
Where it is taught
- Mechanical Advantage — Work & Machines, Physical Science: Matter, Forces & Energy, Grade 8
In use
Mechanical advantage tells how a machine changes force: actual mechanical advantage = output force ÷ input force.
Mechanical Advantage
Questions using input force
Problem 1
Output force is 100 N and input force is 25 N. Find actual mechanical advantage.
Answer and explanation
4
100 ÷ 25 = 4.
Problem 2
A machine has mechanical advantage 2 and input force 18 N. Find output force.
Answer and explanation
36 N
2 × 18 = 36.