Question

Will force of friction come into play when a raindrop rolls down a glass window plane

Answer 1

YES, the force of friction come into come into play when a rain drop rolls down a glass window plane bcoz the plane is contact with the drop and the drop is in motion and the surface of both the objects are inter lock with each other

Answer 2

" Yes "

The given statement is true.

This can be stated as for acting friction there is absolute need of having two surfaces to come in contact.

Here in this case also rain drop make a clear contact with the window glass.