Analogy.
Stop clock : accurate time,______:accurate weight

Give an example of a device used to find the accurate measurement of weight.

Answer in a a sentence or two.What are the rules to be followed to make accurate measurement with scale?

A person is standing on a weighing machine placed on the floor of an elevator. The elevator starts going up with some acceleration, moves with uniform velocity for a while and finally decelerates to stop. The maximum and the minimum weights recorded are 72 kg and 60 kg. Assuming that the magnitudes of the acceleration and the deceleration are the same., find a. the true weight of the person and b. the magnitude of the acceleration. Take g=9.9 m/s^2 .

A wall clock uses a vertical spring mass system to measure the time. Each time the mass reaches an extreme position, the clock advances by a second. The clock gives correct time at the equator. If the clock is taken to the poles it will

The weight of an object on the Earth is ________________ times its weight on the Moon.

Find whether the following sentences are true or false. If false correct the statement. An electronic balance is a device used to find accurate mass.

A pendulum clock keeping correct time is taken to high altitudes

A pendulum clock giving correct time at a place where g=9.800 ms^-2 is taken to another place where it loses 2 seconds during 24 hours. Find the value of g at this new place.