Simple Machines (engineering)

Personally, I call it the "pivot", but it's more properly

and elegantly referred to as the " fulcrum".

lever, inclined plane,

The can opener was invented after the invention of the can. Before it's arrival, cans were opened by many and dangerous ways. The dedicated opener made the operation quicker and safer than previous methods.

Friction force oppose motion between two bodies that are in contact. This force is important in machines and pulley systems in that it enables the gears to have grip and there is no unnecessary sliding.

Instantaneous power doesn't have a frequency; it's instantaneous!

ENDING OPERATIONS AND CLEANING UP Ensure the handle is left in a safe position after use. Leave the work area in a safe, clean and tidy state. POTENTIAL HAZARDS AND INJURIES Sharp edges and burrs. Crush and pinch points. Hair/clothing getting caught in moving machine parts. Operator’s hands may be caught and drawn into the counter-rotating rollers.

A light bulb is a simple machine. A light bulb is a screw.A screw is a simple machine.

Screw

A wheelbarrow is a complex machine: it incorporates a wheel and the handles form a lever. (That's not considering details like screws to hold it together--primitive wheelbarrows didn't have screws).

The door on hinges would be a lever and the door knob would be a wheel and axle.

There are gears in the motor and engine. The tires are connected to a wheel and axle, so is the steering wheel. The actual forklift acts as a lever. The tips of the fork are actually wedges, but that is irrelavent.

Screw Pitch is defined as the axial distance between threads. One complete revolution of the screw will move it into an object the distance of the pitch. The smaller the pitch, the greater the mechanical advantage (ability to do work) achieved.

lever, wheel and axle, screw, wedge, pulley, and inclined plane

I'm not a pro, but I've maintaind my washers, and those of friends for 30 or 40 years and, to my knowledge, the timing of the cycles is "FIXED" inside the timer. On older models that utilize mechanical timers [internal "cam" wheels] the timing is fixed by the lobes on the wheels, and the relationship of the wheels for the different operational sequences are rigidly fixed in relation to each other. On the newer solid state electronic timers, the timing is pre-programed into the ICs [integrated circuit chips]. Unless the chips are reprogramable, then they too cannot be "calabrated."j3h.

A machine

China manufactures Masterforce.

They are both simple machines.

Lever- is a solid bar that rotates, or turns, around a fixed point. The bar can be straight or curved. The fixed point is called the fulcrum.

wedge- is a simple machine that has a thick end and a thin end. Wedges are used to cut, split, or pierce objects- or hold objects together. It is a type of inclined plane, but inclined planes are stationary, while wedges often move to do work.

There are nearly 75,000 species of wasps worldwide, according to scientists.

There are six simple machines:

Inclined Plane

Wedge

Screw

Pulley

Wheel

Lever

The two classes of simple machines are:

1. The simple machines that deal with vector quantities like velocity and force

(the inclined plane, the wedge and the screw).

2. The simple machines that deal with torque (the force to rotate an object around an axis, pivot, etc.) like the pulley, the wheel, the lever.

You would think a screw falls into the torque class, but it's classified as a helical inclined plane.

Mechanic ( 12 )

they uses their brains for that matter.

First put your fingers in the grip holes of the scissors. Then by opening and closing your hand you will make the scissors open and close. Finally, open your hands, put whatever you wish to cut between the two sharp edges of the scissors, and close your hands.

it is by changing the direction of the input force on the object on studyisland