How do simple machines make our job easier?
How do simple machines work?I am so happy you asked!Machines can change the size, direction, and distance of force.
A single person can lift a car with a flat tire using simple machines.The force needed to change a tire can be changed with the jack and lug wrench.
The force needed to accomplish a task is altered by simple machines.There are six types of machines.
The lever is the first type of machine.A lever is a rigid bar that rotates on a fixed point and changes the force on it.
There are levers in three different classes.There is an input force and an output force on either side of the lever.This causes the output to move in a different direction.A see-saw is an example of a first class lever.A second class lever has an output force.The force is changed by this.A wheelbarrow is a lever.The third class lever has an input force.A broom is a lever.
Changing the distance the force acts on makes work easier.A wheel and axle is made of two disks.
cylinders with different shapes.A steering wheel, a car wheel and a screwdriver are examples.
A force can move an object to a different elevation on an inclined plane.Why do slopes and ramps need less energy to move a load?The upward motion is changed to the smaller distance of the output force from the input force.
A wedge is a device made of two planes and is used to split objects.When a wedge is driven into a log, the size of the input force at the wider top is changed to greater output force in order to force the wedge through the wood.A wedge is an example of a knife blade.
The longer the plane, the less force to turn.There are nuts and bolts.A nut has threads on it.
The pulley is the last type of machine.A pulley is a rope that fits into a wheel.Changing the direction or size of the force on the pulley makes it easier to work.