Question

plz answer this question ❓❓​4 th part only

Answer 1

Answer:

$\huge\overline{\underline{\mid\color{red}\mathfrak༒àñswêr༒\color{black}\mid}}$

A force should act on an object

Answer 2

Answer:

option II.

Explanation:

work = force × distance

W = FS cos theta.

I. if force acts on object it is not obvious that work is done for eg. if we exert force on the wall, it doesn't move so no work is done.

III. if force acts perpendicular to object i.e 90°

Cos 90° = 0

so no work is done.

IV. if object not moves no displacement occured.

so work done is zero.

so the right option is II.

hope it helps u....