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Results tagged with newtonian-mechanics
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user 63055
Newtonian mechanics discusses the movement of classical bodies under the influence of forces by applying Newton’s three laws. For more general concepts, use [classical-mechanics]. For Newton’s description of gravity, use [newtonian-gravity].
3
votes
How to calculate acceleration from power and weight?
100 Watts * 1 second = 100 Joules. Assume (best case) all is converted into kinetic energy and no friction nor air resistance.
Kinetic energy = $\frac{1}{2}mv^2$
Solve for $v$
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0
votes
What do we call these energy forms?
1) There are many types of potential energy. You could think of your arm as sort of like a spring, which stores elastic potential energy. More accurately it would be chemical potential energy that hel …
- 3,062
0
votes
Experiment on friction coefficient
Expounding on sammy's comment, when you divide $F_D$ by $F_N$, since $F_D$ only is measured to one significant figure you can only report $\mu_S$ to one significant figure.
Value of $\mu_S$ from calc …
- 3,062
-1
votes
1
answer
521
views
Are coefficients of friction the same in different gravitational fields?
For objects resting flat with $F_N = mg$, both gravity $g$ and coefficients of static friction $\mu_s$ play into calculating friction force by:
$$F_{friction} = \mu_s F_N = \mu_s mg$$
This equatio …
- 213k
1
vote
What would the ideal amount of gravity be for an Olympic sprinter?
Zero friction == zero forward movement possible through running.
Zero gravity means zero normal force $F_N$ (unless the runner was tethered to the planet's surface) which means zero friction force $ …
- 3,062
3
votes
Will the ball come out of the well or not?
Farcher provides an excellent walkthrough of the problem, but maybe doesn't address your question of: "Why there are some conditions where the ball does not exit even though it loses no energy?" Here' …
- 3,062
11
votes
Accepted
Hourglass on the Moon
What is the relationship between hourglass flowrate and local gravity?
As in the excellent answer to a related question (hourglass flowrate vs. sand grain size) and this published paper, the mass flow …
CommunityBot
- 1
2
votes
Friction Between Liquid and Solid Surface
The friction between a solid and liquid is a function of viscosity.
The best way to answer this is with a model setup called Couette flow where a fluid sandwiched between two plates is sped up by the …
CommunityBot
- 1