Wednesday, 19 December 2012

Weight and Mass

Though the terms weight and mass are used interchangeably in common language, in science there is a difference between the two terms.

Mass and weight are related to the formula: W = F= mg
ie: weight = Force = (mass) x (acceleration of gravity)
so, if gravity force is increase then weight will also increase. (Directly proportional)

If you remember the formula then you can easily write the below statements in exams.

#1. The weight of an object = force of gravity felt by that object  
but
the mass of an object is the amount of molecules the object has

#2. An object's weight depends on the pull of the gravitating object(like Earth)
but
the object's mass is independent of the gravity.

#3. weight measured in Newtons(N) and mass measured in kilograms(kg).


No comments: