Suppose that you determine the density of a mineral by measuring its mass (m) (4.635±0.002) g and its volume (1.13±0.05) ml. d = m/v what is the uncertainty in the computed density?

Explanation:

we have error in division of 2 quantities is related as

where are errors in quantities a,b

Thus error in density becomes

Applying values we get

thus

it would be kevlar ^^

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.