All Questions
Tagged with inertia newtonian-gravity
24
questions
23
votes
7
answers
3k
views
Does the bias in a loaded die depend on gravity?
Suppose I bias a cubic plastic die by incorporating a lead pellet hidden just behind the '1' face, so that the probability $P_6$ of rolling a 6 is greater than the symmetric 1/6. Its exact behaviour ...
- 10.1k
14
votes
6
answers
5k
views
Would you run faster on Mars?
Given the 1/3rd of Earth's gravity on Mars and neglecting space suit limitations and also assuming you have maintained your muscle strength, would you run faster on Mars?
The answer may not be so ...
- 4,170
0
votes
2
answers
553
views
An elevator moving with constant velocity
While an elevator moves up, it moves up with a constant velocity. I read this post and understood that it's because of inertia. However, I'm not really convinced.
So what happens which I have ...
- 1,168
0
votes
1
answer
171
views
What is the gravity/inertia question?
Is the discussion about how gravity and inertia are the same, about the idea that when you hit a ball, it doesn't come back but when you throw a ball up, it does come back?
4
votes
4
answers
1k
views
Inertia without gravity
Is there inertia in absence of gravity? If I was in a region of space with zero gravity, would I have to apply some force to accelerate a massive body?
- 941
1
vote
0
answers
82
views
Inertial mass and gravitational mass [closed]
I would like to ask about gravitational mass. I know inertial mass is changing by motion (speed) according to $m=\frac{m_o}{(1-v^2/c^2)^{1/2}}$ And also that is inertial mass which sits in $E=mc^2$. ...
- 1,148
17
votes
11
answers
6k
views
Is "Mass" really measuring unit for inertia?
Imagine if two objects of identical mass are under two different gravitational field,let's say two different planets (with Different value of gravity) both of the objects are of same mass,but we can ...
- 341
3
votes
2
answers
517
views
Which fundamental force underlies inertia? [closed]
We learn about the four fundamental forces (gravity, electromagnetism, strong, weak). I am curious about how these four forces mediate/cause/drive everyday phenomena. In particular, it has never been ...
- 33
36
votes
5
answers
3k
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Couldn't we always redefine units so that inertial mass and gravitational mass are equal?
It is a known fact that inertial and gravitational masses are the same thing, and therefore are numerically equal. This is not an obvious thing, since there are even experiments trying to find a ...
- 2,347
0
votes
2
answers
4k
views
Why do 2 bodies of different masses reach the ground at the same time? [duplicate]
Since inertia is the quantity that resists change in motion, and is represented by mass, and if two different objects are dropped from the same height, shouldn't the heavier mass accelerate less than ...
- 163
0
votes
2
answers
233
views
How does Newtonian gravity violate law of inertia?
I came across a line on http://physics.ucr.edu/~wudka/Physics7/Notes_www/node49.html
" If the experiment is tried in vacuum any two objects when released from a given height, will reach the ground ...
- 444
4
votes
3
answers
2k
views
Would a spinning object like a fan stop faster in a non-gravity environment?
Let's say there is a fan spinning and stops in exactly 1 minute on earth. Would it stop faster or slower or exactly same time in a spacecraft without gravity but exact same density of air. Btw: let's ...
- 51
30
votes
3
answers
12k
views
Why does a bowling ball roll down faster on a slope than a tennis ball, yet both hits the ground at the same time if they're dropped from the rooftop? [closed]
If a tennis ball and a bowling ball are dropped of a rooftop, they hit the ground at the same time. But if they are rolled down a slope, the bowling ball rolls faster. Why?
- 317
3
votes
2
answers
4k
views
Car physics Braking and Accelerating
Why does a car nose up when accelerating and nose down when braking. and when i try to move in reverse with the handbrake on the car rear move up ?
- 67
0
votes
1
answer
499
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Mass, Weight and Inertia
In The Feynman Lectures on Physics Vol-1, it is written
How hard it is to get a body going is one thing, and how much it weighs is something else. Weight and inertia are proportional, and on earth'...
