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Jan
27
comment Predicting contact time and COR (coeff of restitution) for a cricket ball and pitch
You might to explain what a pitch, spinner etc is.
Jan
27
comment equation for velocity vs displacement for nonlinear acceleration
So my answer was useful. Great.
Jan
26
comment Predicting contact time and COR (coeff of restitution) for a cricket ball and pitch
The mechanics are WAY more complicated than what you can put into a COR. Look at a tennis ball hit at 6000fps (youtube.com/watch?v=VHV1YbeznCo).
Jan
26
comment Off-center impulse equations
For a graphical solution to the two centered spheres collision look at physics.stackexchange.com/a/220776/392
Jan
26
comment Off-center impulse equations
I have a similar answers here physics.stackexchange.com/a/155431/392 and physics.stackexchange.com/a/29160/392
Jan
26
comment Off-center impulse equations
I am voting to re-open in case this question attracts other even nicer answers.
Jan
26
comment Off-center impulse equations
@Farcher - Yes. I think general cases are more instructive than specific values.
Jan
26
comment Off-center impulse equations
@Floris I don't think this question should be closed. The question of "How do we deal with off-center impulses?" although trivial to some does not have an nice accepted answer we can point at.
Jan
25
answered Off-center impulse equations
Jan
25
comment equation for velocity vs displacement for nonlinear acceleration
$v(s)$ does not exists analytically. This is because $s(t)$ cannot be solved for $t$ since it is of the form $t=a \sin(t)$. Otherwise you could state $v(s) = v(t(s))$ from $v(t)$.
Jan
24
answered equation for velocity vs displacement for nonlinear acceleration
Jan
24
comment What is the minimum force required to move this block
I suggest you edit the question and use math formatting for readability. Enclose any expressions in $...$ and use special keywords like \frac{a}{b} for $\frac{a}{b}$, x^2 for $x^2$ and x_1 for $x_1$.
Jan
22
answered Seesaw Physics - Shipping Container House Problem
Jan
22
comment Seesaw Physics - Shipping Container House Problem
I'm voting to close this question as off-topic because this is a problem better suited for Engineering.
Jan
22
comment Time dependent ODE involving cross product
it is related to physics with rotating frames. See wikipeadia or any university course on dynamics to derive this
Jan
22
comment How to apply a force vector to a position vector?
Are you sure the force is on the same direction as the position? Isn't the more general case $\vec{F} = ( F \cos \psi. F \sin \psi)$. Also the velocity of the particle needs to be specified in order to establish the final position.
Jan
22
comment How to apply a force vector to a position vector?
BTW: It is recommended you typeset sines and cosines with \sin and \cos. The difference is $sin(x)$ vs. $\sin(x)$. I already edited your post.
Jan
22
revised How to apply a force vector to a position vector?
typeset `\sin` and `\cos`
Jan
21
answered Center of Instantaneous velocity in two degree of freedom problem
Jan
21
revised What orientation will let me drive the fastest with a tray of coffee on the floor?
edited tags