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Students are to find the weight of the meter rule using the principle of moments. They will determine the center of gravity of the meter rule. They will use a known mass to determine the weight of the meter rule by suspending it at different positions on the rule. AIM
Defintion: Weight. The gravitational force on a mass is its weight. We can write this in vector form, where →w is weight and m is mass, as. →w = m→g. In scalar form, we can write. w = mg. Since g = 9.80 m/s 2 on Earth, the weight of a 1.00-kg object on Earth is 9.80 N: w = mg = (1.00 kg)(9.80m / s2) = 9.80N.
5.2 Weight and Gravitational Potential Energy In previous chapters we modeled the force exerted by the earth on a particle of mass m by its weight w=mg, (5.17) with g the gravitational acceleration due to the earth. Referring to Problem 2 above, we can now easily evaluate this quantity by equating the weight with the gravitational force
its velocity. Weight, on the other hand, is simply the force of gravity with which the Earth attracts a body. Since this force depends on the distance between the Earth and the body, the body will indeed become weightless if taken far away (meaning many thousands of miles).
The weight of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity, w = mg. Since the weight is a force , its SI unit is the newton.
Physics experiments involve the measurement of a variety of quantities, and we generally use numbers to describe the results of measurements. Any number that is used to describe a physical phenomenon quantitatively is called a physical quantity. It consists of a precise numerical value and a unit.
Weight. The weight (force) of a body is the pull of gravity on the body due to gravitational attraction (acceleration) Hence F = ma becomes W = mg. W = mg. where W = weight . m = mass . g = gravity. Gravitational Field Strength, g. Defined as gravitational force per unit mass. Varies from place to place.
