Question

Let us assume that you have lifted a suitcase and kept it on a table. On which of the following does the work done by you depend or not depend? Why?
a) The path taken by the suitcase.
b) The time taken by you in doing so.
c) The weight of the suitcase.
d) Your weight.

Answer 1

Work done =mgh

(a)Since work is done against gravity,which is a conservative force,therefore work done is independent of path.

(b)Work done does not depend on time.

(c)Work done$=mgh=Wh$ where W is the weight of the suitcase.

(d)Work done to lift the suitcase is independent of your weight.