Inertia - two objects falling

[compuser123]

I've read other posts about this but I don't think this question was covered.

Say you have two objects with different masses in a vacuum sitting on some kind of plank. Next, you remove the plank from both at the same time. The heavier object has a greater inertia, which means that it has a greater tendency to resist change. Does that mean that it will take longer to start falling? By longer I mean something that can't been seen with the naked eye, but a computer can detect the difference in time to start falling.

 

[PeroK]

I've read other posts about this but I don't think this question was covered.

Say you have two objects with different masses in a vacuum sitting on some kind of plank. Next, you remove the plank from both at the same time. The heavier object has a greater inertia, which means that it has a greater tendency to resist change. Does that mean that it will take longer to start falling? By longer I mean something that can't been seen with the naked eye, but a computer can detect the difference in time to start falling.

It seems to me that if it doesn't start falling immediately, then it never will. Why would it "wait" before starting to fall?

 

[Jimmy]

A more massive object experiences more gravitational force. A body with twice the mass will experience twice the gravitational force and accelerate at the same rate. See:
https://www.physicsforums.com/insights/why-is-acceleration-due-to-gravity-a-constant/

That aside, an object of any mass will start to fall immediately.

 

[compuser123]

Thanks guys. Your help is much appreciated.

 

[ZapperZ]

I've read other posts about this but I don't think this question was covered.

Say you have two objects with different masses in a vacuum sitting on some kind of plank. Next, you remove the plank from both at the same time. The heavier object has a greater inertia, which means that it has a greater tendency to resist change. Does that mean that it will take longer to start falling? By longer I mean something that can't been seen with the naked eye, but a computer can detect the difference in time to start falling.

To add, it may take more effort to get the heavier object to move, but the gravitational force acting on it is also larger! So can think of those two effects counteracting with one another.

Zz.