Ahhh I get it now. The 20N of a mass is actually the measurement of the gravitational force that acts on the mass, and not some property of the mass (although directly related to it). It then makes sense that a 20N (gravitational) force acting on two masses would have a different acceleration...
It's first semester engineering physics with calculus, so although it is an intro course, high school physics is a prerequisite. If one has absolutely no history with physics, I think there are one or two classes before it.Personally, I just studied a high school physics book and took a...
Thanks.. that's a little clearer now. Why call a mass a 20N mass when it can only exert 20N sometimes? It sounds to me that the unit of Newtons mean something different when we are talking about masses versus forces?
Homework Statement
An unknown mass is hanging from a massless string that runs over a massless, frictionless pulley.
Do the following two scenarios yield the same acceleration? Why?
Scenario 1: a 20N mass is hung on the other end of the string.
Scenario 2: a Fapp of 20N is applied...
Got it! I can't believe I spent so long on it when the solution was so simple!
There was another equation that I omitted because I didn't think I'd be using it:
\Delta x=\frac{1}{2}(v_{0x}+v_{x})t
So here is how I solved it:
I found \Delta x_{1} in terms of the final velocity with...
Homework Statement
On June 14th, 2005, Asafa Powell of Jamaica set a world's record for the 100-m dash with a time t=9.77s. Assuming he reached his maximum speed in 3.00s, and then maintained that speed until the finish, estimate his acceleration during the first 3.00s.
Homework Equations...