Simple Machines Flashcards
What is simple machine?
It’s is a tool that makes work easier
The most notable development of the entire human history is ___________
Simple machine
according to physics when is a work done?
Work is done when a force acts on a body and the body moves in the direction of force
What are the 2 factors to keep in mind while work is being done
- The object has to move, when force is applied
- The motion must be in the direction of the applied force
What do you mean by class one lever
In class one lever,the fulcrum is located somewhere between the load and effort
What is the SI unit of work
Joule
Describe work done
Work done = force x distance
= N x m
=joule ( J )
What do you mean dy class two lever
In class two lever,the load is located in between effort and fulcrum
What do you mean by class three lever
In class three lever,the effort is located in between the fulcrum and load
What is a mechanical advantage
In a simple machine the energy supplied and the output it gives are equal output is equal to input
What do you mean by inclined plane
An inclined plane is a flat, sloping surface with one end higher than the other.
What do you mean by screw
A screw is actually an inclined plane would into a spiral around a straight rod the winding is. Called a thread
What do you mean by wedge
A wedge is a set of two inclined planes that meet at a sharp and pointed edge
What do you mean by wheel and axle
A whee and axle is an arrangement of a wheel (which has a larger diameter rigidly attached to a rod called an axle (which has a small diameter) one either turns
What do you mean by pulley
A pulley is made of a wheel with a groove around its rim and rope passing through the groove the week moves around An axle a single fixed pulley changes the direction of the applied force and a movable pulley multiplies the applied force.
