To see if your results are reasonable, you can compare the final velocity of the stone as it falls down unwinding the wire from the pulley, to the velocity the stone would have if falling the same distance while unconnected to the pulley. What is the velocity of an untethered stone after falling 0.663 m from rest?

3.6 m/s

Explanation:

We are given that

Initial velocity of free falling body,u=0

Distance, h

We have to find the velocity of an untethered  stone after falling 0.663 m

Where

Substitute the values

Hence, the velocity of an untethered  stone after falling 0.663 m=3.6 m/s

the answer is b, have negligible mass

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force