SIR/MADAM,

Asked by bhanu24 | 14th Aug, 2009, 08:57: PM

Expert Answer:

Consider the lift going downward at constant speed, and of course it's direction is not changing, implies a constant velocity. Constant velocity means zero acceleration.

Now F = ma, where F is the net/unbalanced force. Since a =0, F = 0. So this means that unbalanced force is zero.

So all the forces acting on lift are balanced.

Regards,

Team,

TopperLearning.

Answered by  | 15th Aug, 2009, 10:15: AM

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