Simple Machines (engineering)

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

Inclined planes and wedges are both forms of inclined planes.

The lever. Wheels work the same way that a lever does in that a wheel is like the outer end of the lever...

Tin snips are similar to scissors - they are a combination of two wedges (the blades) and two levers (each blade and the handle it connects to) joined at a fulcrum (the hinge.)
There are many types of simple machines. Tin snips would be a first class lever, as the fulcrum(pivot) is in the middle.

A shovel is a lever. it has a handle, and one hand sets a fulcrum with the load set opposite the hand that is not the fulcrum. It might be argued that the leading edge of the shovel is a wedge making your shovel a compound machine, but that's cutting things fine.

A screwdriver is an example of a wheel and axle.

An axe is an example of a wedge.

Scissors are an example of a lever.

A ramp is an example of an inclined plane.

A faucet is an example of a screw.

A flag pole is an example of a pulley.

The main cutter or the clip is third class and the handle is of second class.

The axe head is a wedge, which is really two inclined planes. The handle is a lever with the fulcrum at the base, load at the end (the head) and force somewhere in between depending on where you place you're hands.

Yes.

There is no one simple machine that is a can opener. A can opener is a combination of simple machines:

1. Wedge,

2. Lever,

3. Wheel and axle.

Quarrying

Many of the workers were involved with stonework. Without the use of jackhammers or drills, these talented specialists separated stone blocks from the earth with amazing patience. Since stone can hold under intense forces, the stones were broken by pushing them apart. Stoneworkers would, with iron or copper chisels, hammer out a chunk of rock and insert a wooden wedge in the crack. When the wood was wetted, it would expand and, if the wood was properly placed, it would break off a desirable chunk of stone.

Transport and the Inclined Plane

The Egyptians were no strangers to the transport of stone, and no doubt they found out quickly that barges were far more efficient than dragging them with human power. The quarries had a causeway, leading to the loading harbours on the Nile. The barges and their precious stone cargo were boated down the Nile River to another harbour close to the current pyramid project.

After their journey down the Nile, the stone blocks were offloaded from their barges onto a ramp built right up to the dock. This ramp, with a slope as little as 1 in 3,000 led all the way up to the pyramid. The ramp was made mostly of mud bricks .The construction of the Great Pyramids' ramp took ten years - one-third of the time it took to complete the entire project. As the pyramid grew, so did the necessity for a higher ramp, and dirt or bricks could simply be piled on top of the existing one to reach the new height of the pyramid.

Humans were the basic source of labour for these efforts. Stones would be moved onto sleds to make this long journey to the pyramid. As few as 70 or as many as 1400 men are necessary to pull a rock forward. Mosaics have shown liquid being poured on or under the rudders, because not only was friction a problem, but also the wooden rudders were catching on fireu8u! These liquids could have been oil or grease to act as a friction stopper, or milk or water to act as a flame stopper. Regardless, we know that Egyptians understood the fundamental concept of friction and sought to lower the sled's friction.

The Egyptians used animals eg. oxen to pull the stone blocks.

The purpose of a simple machine is to facilitate or make whatever job you are doing easier. For Ex. A stapler uses a lever. Which is easier forcing a staple with your fingers or just pushing a piece of plastic.

brainteasers

1 - You need to make sure that the cutting blade is taut.

2 - The cutting blade should be close to the workpiece.

3 - piece of work should be taut.

4 - the round cutting blade is adjustable.