# Calculating time for Linear actuator to operate?

## Main Question or Discussion Point

I have a linear actuator operating on an object that, when pressure acts against it, produces a force up to 4000 newtons.

The linear actuator operates with a maximum speed of 11mm/s at no force and a minimum speed at maximum force of 8mm/s. Being a linear actuator the speed decrease linearly from 11mm/s to 8mm/s. Is there a way of calculating the time it will take the linear actuator to fully extend 1.7mm from 0 newtons to 4000 newtons?

Is it the basic "suvat" equations:

s=((u+v)/2)*t
s=u*t+0.5*a*t^2

and just rearrange them for the vale you want?

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I have a linear actuator operating on an object that, when pressure acts against it, produces a force up to 4000 newtons.

The linear actuator operates with a maximum speed of 11mm/s at no force and a minimum speed at maximum force of 8mm/s. Being a linear actuator the speed decrease linearly from 11mm/s to 8mm/s. Is there a way of calculating the time it will take the linear actuator to fully extend 1.7mm from 0 newtons to 4000 newtons?

Is it the basic "suvat" equations:

s=((u+v)/2)*t
s=u*t+0.5*a*t^2

and just rearrange them for the vale you want?
I think the basic equations might suffice. Could you please explain a bit clearly as to when the force acts on the actuator and when it's speed starts changing? (Maybe with a diagram)