it is the metal mass like a stuff.
No it is not.
It would require (3 X 10)/15 = 2 lb to lift the 3 lb weight. Actually, something a little greater than that. 2 lb is the force to balance it. (Obviously, the lever "has" no force. It requires the force to lift the weight.)
The load arm is the radius of the pulley. This is the distance from the fulcrum to the load-carrying side of the rope.
ARM is a computer chip manufacturer. They were first known as Advanced RISC Machines, but now just ARM. They make low power chips for use in things like smartphones, pads, and netbooks.
If it is the hydraulic cylinder itself you will have to replace it. If it the boom arm a capable welder should be able to repair it.
try to use an universal weight grams it is included when you buy an equal - arm balance
No it is not.
Nobody cares
Yes, an equal arm balance is commonly used to measure mass by comparing the mass of an object to a set of known masses on the other side of the balance. When the two sides are equal, the mass of the object can be determined.
Before you begin using an equal arm balance, you must make sure the riders are an equal distance apart, and make sure the balance is balanced. Then, place the object(s) on one side of the balance, and the object(s) that you want to compare them to. Whichever object is closer to the ground is heavier. If the objects are equally levelled, they have equal mass.
in a gravity field it can find 2 equal masses
An equal arm balance can be used to weigh or compare objects with a high degree of accuracy. The arms must be properly calibrated to equal lengths and balanced evenly on the axis of rotation prior to use.
anything that has mass and takes up space.
Equal arm balances are recommended for laboratories, to weigh small amounts of materials. I believe that they are more exact.
A lever arm balance is a simple machine that uses a lever arm to compare the weights of two objects. When the lever arm balances horizontally, it indicates that the weights on each side are equal. This principle is based on the law of equilibrium in physics.
The equal arm balance is used on a lever, in particular, the class 1 lever. It consists of a beam that pivots around a central point with two identical arms on either side for balancing weights on a fulcrum.
An equal arm balance has two "weight pans". A weight pan is the part of a balance (scale to weigh things with) in which you put the weights.