Recent content by Umair Shariff

The drop was approximately 1.5 meters, would air resistance factor in at such small distances??

Good morning everyone! I am a Medical Doctor and have a very basic understanding of physics (Studied till high school). I was very much interested in freefall experiments and wanted to do something by myself. I was interested to see if I can demonstrate the lack of gravitational pull during...

So, within the solar system, the sun simply has its gravitational field (which is exerted on the bodies within the Ort cloud), while the Earth's gravitational field advances??

It wasent an attempt on my part to break physics, I know I can't and that physics is universal. I just used the law of gravity to explain a question

Interesting, although I want to know something and please bear with me, since this can get a little complex. Lets take the law of gravity, gravity equals mass of two bodes divided by the distance between them squared (I hope that's right, been a long time since I studied physics) so, given a...

Heyy guys, this just came to my thought, if black holes have enough mass to generate gravity strong enough to bend light and (I m not sure about this but remember reading this somewhere) if gravity travels at the speed of light, does it not make gravity a captive of the black hole??

Hi guys, I've recently been reading a lot of Jules Verne and I had a few curiosities that you guys could help with. First, if we were to shoot or fling a bullet to low Earth orbit, what would the muzzle velocity have to be?? Second, instead of a bullet, if we used a capsule with one passenger...

Yes, I understand that the mechanisms involved to control blood pressure are varied including the means by which the body provides feedback on changes in pressure. I am looking for a simple analogy to share with my friend so that he is better able to understand the difference in posture. This...

Hi everyone, I have been hunting all over the Internet for an explanation to changes in the blood pressure when sitting, standing or lying down. I know the complex mechanisms that are involved but I need an equation for an ideal system with the heart in the middle and the pressure that needs to...