O'+n+Nick's

Machanical Advantage= number of times a machine multipies the effort force.
Here are some practice problems: Answer 2. What is the mechanical advantage, if there is an output force of 67N and an input force of 34N? Answer
 * The more pullies there are in the system the easier the work is for the person.
 * Here is the formula: ma=force output devided by force input. And ma=distance of effort divided bhy distance of input.
 * It can never do 100% of the work.
 * This is because of friction.
 * When the machine begins to work friction begins and then heat is created in the machine.
 * 1) What is the mechanical advantage, if there is a out put force of 100N and a input force of 25N?