Homework Statement
see here for a situation of the problem http://i40.tinypic.com/6fbblk.jpg
Homework Equations
F=ma
The Attempt at a Solution
Ok well I've solved this problem but one thing about the solution process troubles me.
Namely when trying to find the force in the bar...
Homework Statement
Ok well I had a real nasty equation in which i could not solve.
I used wolfram alpha to get out this answer "theta ≈ 0.74559 + 6.28319n for integer n".
can someone please tell me what this statement means.
do i assume theta in degrees equals 0.74559(180/pi)...
Homework Statement
Here is a picture of the situation http://i48.tinypic.com/vnmi5t.jpg
Homework Equations
polar coordinate system
The Attempt at a Solution
ok so first i'm attempting to find velocity as a function of time,
first I know V=(dR/dt)er +(R)(d∅/dt)e∅ - this is a...
Homework Statement
see link for a picture of the situation, http://i50.tinypic.com/n5g3z5.jpg
Homework Equations
(1/2)mv^(2) , (1/2)k*l^(2)
The Attempt at a Solution
Total energy of the system at the given point of time is
mv^(2)/2+kl^(2)/2 = 0.6*100/2+100*0.25/2 = 30+12.5 =...
Homework Statement
see this link http://i45.tinypic.com/10gwhw2.jpg
Homework Equations
F=kx, F=ma
The Attempt at a Solution
ok first I find the total length of the pulley system,
2Sa+Sb=L, differentiating with respect to time i get,
2Va + VB=0 and thus 2Aa+Ab =0
So Aa =-Ab/2
next I first...
Homework Statement
See the this link for problem statement, http://i48.tinypic.com/vphsm1.jpg
Case 1 I've solved, however I'm unsure about how good my solution is for case 2.
Homework Equations
F=ma Fu = N * uk
The Attempt at a Solution
Ok first I sum the forces in the y direction...
Homework Statement
Hi all, I am currently working on a problem that i believe involves the work-kinetic energy theorem.
See the attachment and information below.
As shown in the figure, the geometry of the water slide used is 1m:
Slide length = 61,; Slope angle = 24; Ramp height = 3.66 m...
Homework Statement
See attached picture.
Homework Equations
The Attempt at a Solution
I have the solution, but I'm puzzled by the first step in their solution, which reads
Xa^(2) + Xb^(2) = L^(2)
The solution provider then takes the time derivative of this expression which then...
Hi all,
so my question is can i carryout normal algebraic operations on derivatives, for example:
v=ds/dt and a=dv/dt then eliminating dt a=(dv/ds) *v then, a *ds= v*dv
is that how you derive the relationship between acceleration, velocity and displacement?