if the resultant of all forces acting on a body is zero in the case of balanced forces,then why it is said that the forces acting on a lift moving downwards with uniform motion are balanced?

Asked by aditi sharma | 20th Aug, 2011, 12:00: AM

Expert Answer:

For a lift moving downwards with uniform motion, acceleration is zero.
Force = mass x acceleration
So, force is also zero.
If an object has zero acceleration we must conclude that there is no resultant force acting on it.
So a lift moves with uniform motion even if the forces acting on it are balanced.

Answered by  | 30th Aug, 2011, 09:32: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.