One of the most important things to remember when golfing is the ever important Phollow Through. As you can see in the video, Phollowing though increases the time the driver is in contact with the golf ball. Remember that Jimpulse = FΔt = mΔv. Both the average force F and the mass of the golf ball m are constants so increasing the duration t of the Jimpulse will increase the velocity v of the golf ball. Furthermore, if one does not Phollow Through th
Today, as I was working on the Rotational Motion WebAssign, I remembered that if you drop a spinning basketball, it will bounce back up spinning in the opposite direction. I tried to wrap my head around it and hoped that application of some physics knowledge would reveal the odd phenomenon. So let's check out our basketball:
The ball has:
- an angular velocity ω
- a mass m (of 0.6kg!)
- a radius r (of 0.119m!)
- a moment of inertia i of 0.00569kg*m^2 (A basketball does have air in it but w
Trying to think of a new topic about which to blog I somehow remembered seeing this video and thought it only appropriate after finishing the unit on oskillaiton. Inspired by the Tacoma Bridge collapse (1st video) Shawn Frayne designed a small wind generator that uses an oskillating tensioned belt to generate energy from the wind (2nd video).
So as I was chugging along on the Rotational Motion WebAssign I was startled to notice a seemingly coincidental relationship between my givens and my answer. But after, procrastinating longer than is healthy, trying it with other numbers, the relationship was consistent.
This pertains to question 2 on the WebAssign. I found that, for a record on a turntable with an initial rpm that slows with a constant angular acceleration until rest in time t in minutes, the nu
The pages of APlusPhysics.com, Physics in Action podcasts, and other online media at this site are made available as a service to physics students, instructors, and others. Their use is encouraged and is free of charge. Teachers who wish to use materials either in a classroom demonstration format or as part of an interactive activity/lesson are granted permission (and encouraged) to do so. Linking to information on this site is allowed and encouraged, but content from APlusPhysics may not be made available elsewhere on the Internet without the author's written permission.
APlusPhysics.com, Silly Beagle Productions and Physics In Action materials are copyright protected and the author restricts their use to online usage through a live internet connection. Any downloading of files to other storage devices (hard drives, web servers, school servers, CDs, etc.) with the exception of Physics In Action podcast episodes is prohibited. The use of images, text and animations in other projects (including non-profit endeavors) is also prohibited. Requests for permission to use such material on other projects may be submitted in writing to email@example.com. Licensing of the content of APlusPhysics.com for other uses may be considered in the future.