Weight is a measure of the pull of gravity on an object. True or False?

Answer 1

True

Answer 2

Hi nateena , this statement is not always true, consider this situation,

u r standing on a weight machine inside a lift ( stationary ).
suppose ur mass is 55kg, the machine reads 55 kgwt.
actually u exert a force of 55 * 9.8 N. The factor 9.8 as u already know is the accelaration due to gravity by the earth on u.

know the scenario changes, suppose the lift moves down with an accelaration of 9.8 m/s^2. now u exert a force of 55 * 9.8 - 55 *9.8 and u exert 0 N on the machine and ur weight is zero does this mean the accelaration due to gravity of earth is zero.

u might be wondering why a factor of -55*9.8 comes,just see this example, suppose there are 2 cars, as in fast and furious tokyo drift , a drag race, if the 2 cars accelarate with same value the distance between them always remain same (just the concept of relativity).so here the machine also down with 9.8 and u also accelarate with 9.8m/s^2. and there won't any contact between u and the machine. (or even if u r in contact u r not supported by the machine. and u exert no force.

to visualize this go to an elevator, just as the lift moves down u feel that u have less weight, this is because the lift accelarates from rest and reaches a particular velocity and deccelarates ( u feel a little heavy) and comes to rest again at the required floor, say ground floor.

Answer 3

False. Kilograms are a measure of mass, not of weight. People use kilograms for weight only because weight depends on mass and the relation is very straightforward near the surface of the earth. Actual units of weight in the SI system are newtons. Something with a mass of 10kg weighs 10*9.81 = 98.1 Newtons.

Answer 4

true wieght =mass of the object * gravitational pull of the earth

Answer 5

True.
Mass is different. You would weigh less on the Moon than you do on Earth, but you would have the same mass.

Answer 6

True.

Answer 7

Yup, so true