Why spring balance measure weight not the mass of the body?​

The spring balance works on the principle which states that the weight of the body attached to the hook of the spring balance is directly proportional to the extension of the spring. Thus more the weight more the extension and less the weight, less is the extension. Due to this relation, the graduated scale of the spring balance is linear. Hope this helps you!

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

i sometimes feel that way too. i feel that i should hurt someone because they hurt me, but i wouldnt do it. that would make things so much worse i have so much experience with this stuff

explanation: