Force that is applied at one point is transmitted to another point using an incompressible fluid. for example a lift cylander on a dump truck
yes, pulley will help IF not the if YOU USE COMBINE TWO OR MORE PULLEYS. Yes, using a pulley or a system of pulleys will reduce the force needed to lift a brick (or anything). HOWEVER the distance that the rope (or whatever effects the pulley system) has to now travel further so that the energy required to lift the brick through an equal height is always the same.
Machines which are used to lift a load are governed by the "Law of machines", which states that the effort to be applied on the machine (p) is related to the weight (w) which it can lift as - p = mw + c Where m and c are positive constants which are characteristics of the machine.
The way they lift the load.
When you lift the voltage V that goes to a circuit, also the flowing amperage A will go up and so does the power. The lamps will give more light, the equipment will get warmer up to the point where everything goes down. To understand this all you need to know ohm's law. Scroll down to related links and look at "Ohm's Law - Wikipedia". ***************** It has nothing to do with Ohm's Law: that's inductance. P = I E is what answers this question. If I have a motor pulling 15 A @ 110V, that same motor will pull 7.5 A @ 220V (assuming it's capable of that much voltage fluctuation) As voltage rises, current drops for the same net work done. It doesn't climb. That's why heavy appliances are 220 V when outlets are 110 V. That's also why industrial equipment is three-phase vs single-phase residential wiring. ****************
It will depend on the voltage of the electromagnet. If it does not have enough voltage, then it cannot life 3kg.
An electromagnet can, but you have to grasp metal for it to pull on.
The amount of voltage needed to lift a car with an electromagnet depends on several factors. The size of the coil, as well as the amperage will need to be factored in to know how much voltage will be used.
The magnet on the surface and the metal 300 ft down - no. Lowering the magnet to the metal, then lifting - yes.
Because they can then lift the steel easily without having to put chains and lifting gear onto it.
The junkyard electromagnet was not invented by a single individual, as electromagnets have been around since the early 19th century. However, the concept of using an electromagnet in a junkyard to lift and move metal debris is often credited to entrepreneurs and inventors in the automotive salvage industry.
The weight that an electromagnet crane can lift depends on its design and power. Small electromagnet cranes can lift a few hundred pounds, while larger industrial ones can lift tens of tons. It's important to consult the crane's specifications and limitations before attempting to lift objects.
An electromagnet is only magnetic while current is flowing through the coils. A permanent magnet is always magnetic, and does not need electricity. An example of an electromagnet at work is in a metal scrape yard, where a large electromagnet is used by a crane operator to lift ferrous metals into a crusher (scrapped cars, for instance). The metal drops into the crusher when the electricity is switched off by the crane operator. Therefore, they are only really similar when both are magnetised.
Electromagnets are used in scrapyards to lift and transport metal objects. When an electric current passes through the coil of wire in the electromagnet, it creates a magnetic field that attracts ferrous materials like iron and steel. This makes it easier to handle and sort large quantities of scrap metal efficiently.
It is a magnet which moves metal around the scrap yard. Scientific explanation = It s a big round magnet which is actually an electromagnet. This allows the magnet to be turned on then off. When turned on the electromagnet attracts any magnetic substances. This is why most cars are made of something magnetic! You can move this electromagnet around because it is a crane you pick stuff up move it and then drop it by turning the electromagnet off!
An electromagnet is a type of magnet in which the magnetic field is generated by an electric current. When the current flows through a wire, it creates a magnetic field around the wire. By coiling the wire into a loop or solenoid, the magnetic field can be strengthened, making the electromagnet useful in a variety of applications such as motors, generators, and magnetic resonance imaging (MRI) machines.
Only if the needle was made of iron or copper