Work done lifting a 500 kg elevator 50 m

[dsptl]

How much work does an elevator motor do to lift a 500 kg elevator a height of 50 m?

attempt: W = F.S.Cos90 = 0 J

but i think its not right... Please help some1?

 

[Hootenanny]

How much work does an elevator motor do to lift a 500 kg elevator a height of 50 m?

attempt: W = F.S.Cos90 = 0 J

but i think its not right... Please help some1?

Why is the angle between the force and the displacement 90^o?

 

[dsptl]

is tht suppose to be 0 then?

 

[Hootenanny]

is tht suppose to be 0 then?

Well, in which direction is the force applied? And in which direction is the elevator moving?

 

[dsptl]

upwards...

so is tht going to something like W = mg x 50m x cos0

 

[Hootenanny]

upwards...

so is tht going to something like W = mg x 50m x cos0

Assuming that the elevator does not accelerate, that would be correct.