Why does gravity give a constant acceleration and centrifuge?

[sameeralord]

Hello everyone,

Normally if there is 1 kg object and I apply 10 N force it would accelerate at 10m/s. Here the acceleration is determined by the mass of object. How does gravity in the absense of resistance make objects travel at a fixed acceleration?

In a centrifuge a force equivalent to double or triple gravity is used. Does this force give a constant acceleration (9.8m/s2) like gravity too. How is that done?

Thanks!

 

[A.T.]

Normally if there is 1 kg object and I apply 10 N force it would accelerate at 10m/s. Here the acceleration is determined by the mass of object. How does gravity in the absense of resistance make objects travel at a fixed acceleration?

Acceleration is constant if the force is constant, which is not really the case for gravity, but rather an approximation for small fall distances.

In a centrifuge a force equivalent to double or triple gravity is used. Does this force give a constant acceleration (9.8m/s2) like gravity too.

No, the centrifugal acceleration depends on the distance from the rotation center.