All Questions
Tagged with inertia newtonian-mechanics
204
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How to calculate time needed by an object to change its state of motion when an net force applies to it (inertia)?
(Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This tendency to "...
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In a moving car / bus when the car suddenly accelerates do we go back due to inertia or is it due to pseudo force?
When an car moves forward we go back and we have always read that the reason was that our legs stay in contact with the ground and our body goes back since it was at rest and with sudden motion it ...
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Why the orientation of an object on Earth rotates with the rotation of earth? Is this due to friction?
The moon always faces toward Earth. That's because the moon rotates itself while revolving around the earth. This might be the result of tidal force for a long time, but what about objects on Earth? ...
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What experiment should be conducted?
Im self studying physics and came to this question in my textbook:
A passenger in a moving bus with no windows notices that a ball that had been at rest on the aisle suddenly start to move towards ...
2
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How does Newton's First Law show the existence of inertial reference frames? [duplicate]
Newton merely stated the law of inertia as:
An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced ...
- 37
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Does it take more energy to bring a car to a halt if it is still accelerating on impact than travelling at constant speed?
So, my physics is quite rusty, been out of varsity for a while.
A friend asked me this and I am still pondering. Here is the scenario:
2 Cars are travelling towards a wall, and make impact with the ...
- 29
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Why does the ball in Galileo's double inclined plane experiment reach the same height?
Why does the ball in Galileo's double inclined plane experiment reach the same height? I know how to show it by energy conservation law but am unable to prove it by the equations of motion. Can anyone ...
- 91
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Tree falling without inertia while people stay suspended in air for a split second due to inertia
I recently saw a video ( watch it 0.5x speed ) of a slanted coconut tree on the bank of a river in India breaking due to the weight of the kids who climbed on it.
The tree seems to have broken near ...
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Doubt regarding lifts (and inertia?)
so i was thinking about lifts and i am confused.
let's say there is a body within a lift (system at rest). Now if the lift starts to accelerate downwards with say an acceleration a ($a>g$). The ...
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23
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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
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How does inertia affect an object suspended in a fluid?
When I asked my physics teacher how fully submerged objects are suspended in fluids, she told me it was because the object's density was equal to that of the fluid's as a result of the net force ...
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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 ...
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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.
4
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How do I convince my students the Newton's first Law is the way it is?
Every time I teach this law, there are always a few students asking me why a net force is zero on a system moving at a constant velocity. This group of students takes physics for the 1st time. It is ...
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Newton: an object in motion remains in motion: was there anyone else who believed this? [closed]
From my own experience as a schoolkid, that was the law that I was not buying. I could see his understanding of the Lunar orbit making him think this but otherwise, what in human experience would lead ...
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