Pole Definition and 363 Threads

I havn't seen this posted here, but its a nice picture of ice on mars. http://www.esa.int/SPECIALS/Mars_Express/SEMGKA808BE_0.html Is this the result of a comet hitting Mars and depositing the ice?

As the Earth is spinning, how much more would a kg of say, platinum, bought at the equator, weigh at the North pole?

A ball of mass m is fastened at the end of a flagpole connected to the side of a tall building at point P. The length of the flagpole is l and \theta is the angle the flagpole makes with the horizontal. The ball becomes loose and starts to fall. What is the angular momentum of the ball about...

hey there, idunno if this has been discussed before. there were a lot of articles abt a minor change in the tilt of the Earth's axis becoz of the tsunami , does tht mean our pole star have also changed ? any other noticeable effects of this ?? than x vinee..

Before jumping into my post, allow me to give a bit of background. I was a vaulter for the 91-92 Arkansas Razorbacks (2 of the 38 National Championship years - and no they did'nt need me to win). Presently, I help a couple of high school vaulters. I would like to have a discussion about...

Im just trying to write a small introduction for my lab report due in on friday and while i have an idea in my head what it is, i just can't put in into words

A 3.3m long pole is balanced vertically on its tip. It is given a tiny push. What will be the speed of the upper end of the pole just before it hits the ground? Assume the lower end does not slip. mgh=.5mv^2 + .5Iw^2 Initial PE = final KE translation + final KE rotational v=rw, I=.33mr^2...

how to locate pole star

A tether ball of mass 0.15 kg is attached to a vertical pole by a cord 1.1 m long. Assume the cord attaches to the center of the ball. If the cord makes an angle of 20° with the vertical, then a) What is the tension in the cord? b) What is the speed of the ball? Ok well i started it. On...

Say the pole is 10 metres long. I run really fast into a barn that is 15 metres long. Say I run fast enough so that from my point of view the barn shrinks to less than 10 metres long due to length contraction. What happens to the barn now that my pole won't fit? The other problem is that...

I am trying to find what velocity and angle of launch is required for a projectile to be fired from the North pole and land somewhere on the equator. I was thinking 45 degrees with muzzle velocity 9401m/s but that sounds ridiculous. Also how much time would it be in the air for?

I am trying to find what velocity and angle of launch is required for a projectile to be fired from the North pole and land somewhere on the equator. I was thinking 45 degrees with muzzle velocity 9401m/s but that sounds ridiculous. Also how much time would it be in the air for?

A physics experiment with magnets and a vote pole-results This is an experiment with magnets in motion. The question is that if one magnet is spinning along a circular plane such that the north end arrives at a point on the circle just as often as the south end, then what will happen if...