Steve4Physics's latest activity
-
SSteve4Physics replied to the thread Minimum mass of a block.At the point when slipping starts, the tension (##kx##) must be equal to both ##mg## and ##Mg \sin \theta + \mu Mg \cos \theta##...
-
SSteve4Physics replied to the thread Minimum mass of a block.I’m not entirely sure what the difficulty is, but this might help... Imagine gradually adding weights to to A, i.e. gradually...
-
SSteve4Physics reacted to nasu's post in the thread Different way to find center of mass of Hollow hemisphere with
Agree.
You may get better/more answers if you formulate a more specific question rather than just this "check my work" format with three pages... -
SSteve4Physics reacted to vdance's post in the thread Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations with
Like.
Your explanation seems quite easy to understand, and I accept your analysis. -
SSteve4Physics reacted to vdance's post in the thread Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations with Like.
Thank you all for your thoughtful analysis.
-
SSteve4Physics replied to the thread Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations.The key is to identify all the forces exerted by the water on the various internal surfaces of the double- piston. Note that the small...
-
-
SSteve4Physics replied to the thread Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations.It has doubled - see the 2 areas indicated in yellow: Minor edit.
-
-
SSteve4Physics replied to the thread Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations.If I understand correctly, 's' is the piston's effective surface area. By going from the single-piston to the double-piston, you have...
-
SSteve4Physics reacted to kuruman's post in the thread A cylinder connected to a hanging mass with
Informative.
And if you want inline fractions to look bigger, use \dfrac instead of \frac Inline with \frac ##a=\frac{F}{m}## is the acceleration... -
SSteve4Physics replied to the thread A cylinder connected to a hanging mass.Check your working. I get ##T=\frac{-5a+300}{4}##. I don't know if this is the only mistake. As @kuruman says, the preferred approach...
-
SSteve4Physics replied to the thread A cylinder connected to a hanging mass.You mean "If the acceleration of the cylinder's centre of mass is 0,". With some assumptions, the above equations look ok . (A free...
-
SIt's better to use algebra and plug the numbers in at the end. You should be able to express the percentage energy loss as a function of...
-
SI get 17.8%. Note that energy is inversely proportional to wavelength.
-
SYes, thank you Steve4Physics, my mistake was using the wrong value for cos 110 degrees.
-
SSteve4Physics replied to the thread Compton shift problem.##\cos (110^{\circ})## is negative so you can tell that ##1 - \cos (110^{\circ})## will be greater than 1. (I haven't checked if that...
