second class lever
A door is a second class lever because the fulcrum (hinges) are at one end, the resistance (the weight of the door itself) is in the middle, and the effort (the work done on the door--your hand pushes) is at the other end fulcrum<----resistance (door)---->effort = second class lever. fulcrum<----effort---->resistance = third class lever (example is something like a hockey stick where the distance is larger at the resistance end)
A car door is a second class lever. The fulcrum is the hinges, the input force is the person opening the door, the output force is the way the car door swings, the bar is the door, and the load is the force put on the door.
when you talk of basic machines there are
levers
and
wheel and axle
if the rim of the wheel(doorknob) is considered the long end of the lever
and the center of the Axel the fulcrum it can be stated its the same basic machine
if you consider the edge of the axle to be the fulcrum you get the same answer
this is called plane of reference or point of view
some doorknobs look like levers some look like wheels
so it is your choice
The hinges act as a fulcrum, the door is the load, and you apply the force on the opposite edge of the door (where the knob is). A class 2 lever has the load between the fulcrum and the force.
It's class 2 ;)
second kind of lever
Second or third cant remember which.
The door knob is a lever
a lever is a soild that rotates, or turns
wheel and axleA doorknob is a lever.Some of the door knobs are made up of wheel and axle.A door knob is a wheel and axle. It has a wheel that is fastened to an axle
A door is a class - 2 lever.
The nearer the handle is to the hinge (fulcrum) the harder it is to open the door, this is known as the lever principle and is widely known throughout physics. A door and hinge is known as a class two lever.
It is a Lever handle (long instead of a knob) that has not a lock.
A door knob turns to let people open or close the door. For vehicles, a lever or button-lever opens the door. For swinging doors, body weight (pushing) opens a door.
Yes
yes
The door on hinges would be a lever and the door knob would be a wheel and axle.
It is a third class lever machine because The effort is in between the load(food) and the fulcrum(handle)
Second or third cant remember which.