a bit of a ditsy question, as perusal but f = f(t)
so, thats force in terms of t, as opposed to lets say, f = ma?
basically, another way of finding force, but instead of ma, we're using time?
They're not opposed to each other. It's not one or the other. F=ma is a law of newtonian mechanics. It's true always. Always. Writing F(t) = ...... is just a way to describe the force at different times. If you're given time, you can plug that into the F(t) to find the force at that time.
These aren't the only two ways you can find the Force acting. You know many more. Using the fact that the system may be in equilibrium, and therefore resolving force to 0, resolving total moment to 0. Using Ft = change in p. etc. etc.
They're not opposed to each other. It's not one or the other. F=ma is a law of newtonian mechanics. It's true always. Always. Writing F(t) = ...... is just a way to describe the force at different times. If you're given time, you can plug that into the F(t) to find the force at that time.
These aren't the only two ways you can find the Force acting. You know many more. Using the fact that the system may be in equilibrium, and therefore resolving force to 0, resolving total moment to 0. Using Ft = change in p. etc. etc.
Sorry, I should have said instead of, instead of opposed.
What is a=a(t) an expression of - what is it describing?
It’s like: x=x(t) x = t^2 -2t could be an equation?
a is acceleration.
Not sure what you're talking about about with x=t2−2t, it is an equation. x is expressed in terms of time here therefore it is a function of time, ie x(t)
Not sure what you're talking about about with x=t2−2t, it is an equation. x is expressed in terms of time here therefore it is a function of time, ie x(t)
so, x=t2−2t is an example of x=x(t)
its just expressing x in terms of t?
would would the original example look like: F=f(t)