All Questions
Tagged with inertia kinematics
22
questions
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If a stone is dropped from a hot air balloon, is the initial velocity $u=0$, or is it equal to the velocity of the balloon $u=V_{balloon}$?
In theory, since the stone acquires the velocity of the balloon, it should go upwards slightly before coming down since it's velocity is equal to that of the balloon (in upward direction). But ...
- 131
1
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1
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185
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Calibrating an inertial measurement unit (IMU) to zero/flat surface
I am building a digital spirit level using an inertial measurement unit (IMU), and I want to calibrate the device so that it shows the angle correctly. Does anybody here have experience with this kind ...
- 13
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54
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Propellant less propulsion when there is nothing to push against
Is there a way for a vehicle to move without losing mass when there is nothing for the vehicle to push against? For example, a helicopter flying around in a vacuum.
1
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3
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Can we have motion in systems where inertia is neglected? [closed]
According to Newton's law:
$$ \sum F=ma$$
So, if we have some acceleration, it's because we have a certain amount of motion in our systems.
This makes me confused if inertia was neglected. Are there ...
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7
answers
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How many types of inertia are there?
I was looking for types of inertia, but I am confused. My book says there are three types of inertia, namely inertia of rest, inertia of motion, and inertia of direction. But when I searched for these ...
- 1,357
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Inertia of an elevator
Imagine a situation where we have a relatively light empty elevator moving up at a pretty high constant velocity say something above $10\ m/s$, just so that it has a considerable amount of momentum ...
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4
answers
112
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Newton first law of motion
The State of rest and the state of uniform linear motion are equivalent. Why?
-1
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2
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94
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Moment of inertia of a rotating square toroid [closed]
I'm trying to work out the moment of inertia (i.e. what would be $I=mr^2$ for a point mass) of the volume of rotation around the y-axis of a square with side length a, at a radius along the x-axis R, ...
- 101
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4
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Why does the ball not climb the same height when released from a particular height in a double inclined plane even when the surface is frictionless? [closed]
According to the textbook, the ball will nearly climb the same height (a little less but never greater), why? I came across a question in SS Krotov where it was asked why does the ball not climb the ...
- 19
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6
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261
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Newton's $1$st law question
A long time since I posted it, still did not get a satisfactory solution. So I restate the problem -
Why does not an object attached to a string which is attached to the roof of an accelerating bus ...
- 428
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4
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479
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Can we explain velocity without time? [closed]
I'm trying to wrap my head around inertia/velocity, or just change in general, I guess. I'm unsure exactly sure were my gap is, or what question to ask, so I'll explain with a scenario.
Lets say I'm ...
- 117
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2
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399
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Can momentum be considered as a measure of inertia of motion?
If inertia of motion is a body's tendency to be in motion then can momentum be considered as a measure to calculate that tendency to be in motion?
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2
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Does Inertia really define the resistant ability of a body
I was reading the chapter Newton's 1st law of Motion , where I met the definition of Inertia.
The property of an Object by virtue of which it neither changes its state nor tends to change the state,...
- 103
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1
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Is it necessary that the path of an object in uniform motion is a straight path? [closed]
What does the path of an object look like when it is in uniform motion?
- 211
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How to sensor Jerk=$d^3{\bf r}/dt^3$, or higher derivatives (4th, 5th, 6th order) when applied in the equation of motion of a ballistic missile?
Given a 6th order differential equation of motion as usually used in ballastic missile dynamic models. What kind of sensors are usually used to measure Jerk, (or higher order derivatives in kinematics)...
- 552