Question

Read each scenario and then answer the question.

Scenario A: A 7 N bucket is raised a distance of 6 m.

Scenario B: A 10 N bucket is raised a distance of 4 m.

Scenario C: A 12 N bucket is raised a distance of 3 m.



Which scenario requires the most work?

Answer 1

weight is expressed in Newtons.
W=mg
W is directly proportional to mass.
We can consider as mass.

Scenario A: A 7 N bucket is raised a distance of 6 m.
Workdone=PE=mgh
g is common in all cases. higher the values of mh, higher will be the amount of workdone

=7x6=42J

Scenario B: A 10 N bucket is raised a distance of 4 m.
workdone =10X4=40J


Scenario C: A 12 N bucket is raised a distance of 3 m
workdone= 12x3 =36N

Hence in Scenario A work done is more