Search Results

Results tagged with Search options user 2535
9 results

Newtonian mechanics covers the discussion of the movement of classical bodies under the influence of forces by making use of Newton’s three laws. For more general discussion of energy, momentum conservation etc., use classical-mechanics, for Newton’s description of gravity, use newtonian-gravity.

Without atmosphere you have the simple case of no movement due to no atmosphere for the jet action to work upon, and the not so simple case of the stick rotating in a plane perpendicular to v due to c …
answered Apr 25 '11 by Nic
Given your tag of 'estimation' I would just use $$a=\frac{v-v_0}{t}$$ plugging in some numbers for terminal velocity $v$ and a 'safe' parachute deployed velocity $v_0$. Then assume ~$1\rm{s}$ for $t$ …
answered Feb 14 '12 by Nic
From $F=ma$ we can simply find $a=F/m$. The important part is to remember in these type of questions we are looking for the sum, $\Sigma$, of all the appropriate accelerations to determine $a$. ie. …
answered Nov 6 '12 by Nic
The reason the water doesn't fall out of the bucket (when moving in a vertical circle) is because you have thrown it in the air at the bottom of the swing, the trick is then to 'pull' it back down qui …
answered Oct 7 '11 by Nic
Some terms have become a little mangled here. $mgh$ is the defining expression you require. As this is going to be a rough calcualtion lets take $g=10\textrm{ms}^{-2}$. At the moment this is time in …
answered Aug 19 '13 by Nic
I think Mach's principle is relevant here.
answered Mar 5 '13 by Nic
Provided your hands remain the same distance from the centre of each bar then in a simple physical model the weights can be any distance further out (assuming they are at the same distance and the bar …
answered Sep 29 '11 by Nic
The increased 'resistance' of an underinflated tyre is due to mechanical deformation, friction is independent of area as suggested. The simplest explanation for me is that: as area increases the appl …
answered Oct 26 '11 by Nic
Current theories have it that the Earth formed from a rotating disc of gas and dust, hence it has simply maintained angular momentum.
answered Nov 22 '11 by Nic