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4.3 MA
Part A
Question | Answer |
---|---|
What is force | Force is the action of pushing or pulling on a object |
What is mass | The amount of matter in a object |
What is distance | The magnitude or size of displacement between two positions |
3 Classes | First Class (Fulcrum in the middle) Second class (Load in the middle) Third class (Effort in the middle) |
What is mechanical advantage | Mechanical advantage is the action of reducing the force required to accomplish work |
What is ideal mechanical advantage | IDEAL mechanical advantage is the advantage of a machine with no loss of work caused by friction between moving parts |
Examples of simple machines | Nutcracker, Wrench, Ramp, Stairs |
Formula for gravity | G = N /kg |
Formula for work | W = Fs |
Formula for mechanical advantge | MA = output/input |
Formula for ideal mechanical advantage | IMA = output distance/input distance |
Parts of a lever | Fulcrum, Effort (Input force), Load (output force) |