Wc/2b is wsafe, the largest weight of the load that is safe to lift regardless of the angle of the crane's arm.
The weight of an object is the force exerted on it by gravity. Some standard textbooks define weight as a vector quantity, the force of gravity acting on an object. Some define weight as a scalar quantity that is the magnitude of gravity.
A measure of the gravitational force acting on an object. The formula for weight is given by w = mg. Since weight is a force, the SI unit is the same as force, and the SI unit for weight is Newton (N).
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