Are the forces that act on m1 the force of system accelerating from the force acted upon it plus the force of the spring? So a FBD would look like:
|
| FN --->Fs
[__m1__] -------> a
|
| Fg
F,x,m1= (m1*a) + Fs
F,x,m2=(m1+m2)*a -Fs
Then doesn't Fs cancel out?
acceleration of m1 is...
OK, so I think I have the FBDs, but this was the part I was struggling the most with.
So for m1 I have:
|
| FN
[__m1__] -------> a
|
| Fg
Fnet,m1,x= a
Fnet,m1,y= 0
Am I missing the force of the spring on this? Isn't there an added force in the positive...
Homework Statement
A 2.0-kg mass (m1) and a 3.0-kg mass (m2) are on a horizontal, frictionless surface, connected by a massless spring with spring constant k = 140 N/m. A 15-N force (F) is app0lied to the larger mass, m2, as shown in the figure:
|__m1__|-/-/-/-/-|____m2____| ----------> F...
Homework Statement
Prove that normal force between a block and wedge is: N = m*sqrt(g^2-a^2)
Homework Equations
I used the pythagorean theorem to attempt this.
The Attempt at a Solution
See attached.
Am I doing this right, or am I making up math here to fit the answer?
Homework Statement
To find the height of an overhead power line, you throw a ball straight upward. The ball passes the line on the way up after 0.80 s, and passes it again on the way down 1.6 s after it was tossed. What is the height of the power line and the initial speed of the ball...