Adding forces with input.getaxis

Questions & Answers
1

I am trying to add force to an object with input.getaxis but it does not seem to work for some reason. If I try to translate an object using the same method it seems to work, but how would I go about adding forces? Right now my object does not move at all.

Code:

var moveSpeed : float = 10.0;

function FixedUpdate () {

var translation : float = Input.GetAxis ("Vertical") * moveSpeed;
	
translation *= Time.deltaTime;
			
rigidbody.AddRelativeForce (0, 0, translation);

}

I can’t seem to grasp what I am doing wrong since translating an object with the same method worked.

2

For forces you should not multiply in Time.DeltaTime, that value is usually very small (less than 0.05f, depending on framerate) and phycics already takes the framerate into account. GetAxis can be max 1.0f and movespeed is 10.
TotalForce = 1.0f * 10.0f * 0.05f = 0.5f.
That is too small amount of force to be able to move a rigidbody (if the mass is 1).

Remove the “translation *= Time.deltaTime;” and it should work better, you can also try increasing movespeed a little.