GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An object’s weight is a measure of
A
the force with which it is attracted by gravity.
B
the pressure exerted on a scale.
C
the amount of material per unit volume.
D
the force causing the object to move.
Explanation: 

Detailed explanation-1: -Weight is the force exerted on a body by gravity. It is expressed as W=mg, where m is the mass of the body and g= gravity.

Detailed explanation-2: -Gravitational force is an attraction between masses. The greater the size of the masses, the greater the size of the gravitational force (also called the gravity force). The gravitational force weakens rapidly with increasing distance between masses.

Detailed explanation-3: -The weight of an object is the force of gravity on the object and may be defined as the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton.

Detailed explanation-4: -Gravity is measured in newtons (N). This unit of measurement was named after Isaac Newton who was a 17th-century British scientist.

Detailed explanation-5: -Weight is a measure of force that is equal to the gravitational pull on an object. The weight of an object is dependent on its location. On the moon, the force due to gravity is about one sixth that of the gravitational force on Earth.

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