The rate of change of velocity of a body per unit of time.
Questions tagged [acceleration]
3039 questions
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Will something accelerate forever if a constant force is applied to it on a frictionless surface? If so how?
I don't understand the fact that let's say hypothetically I was pushing a block on a frictionless surface, and I kept applying the same force on the object how it would keep accelerating! Wouldn't there have to be a certain velocity where it would…
Patrick Parish
- 109
4
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3 answers
How to draw a velocity curve from Engine power, weight and traction?
Not sure if this is the right forum but I would like to plot a velocity curve of a train, starting at 0km/h and accelerating up to a max speed.
The data I have for the locomotive engines are:
Power in kW
Traction in kN
Weight in tonnes…
user41019
- 141
3
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3 answers
Does a moving escalator make it easier to walk up the steps?
I was discussing with my colleagues why it feels easier to walk up an escalator when it is moving. My natural assumption was that the movement of the escalator imparts some extra acceleration on the rider that helps to move up the stairs. But my…
2
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0 answers
Magnetic Acceleration due to Repulsion
My question concerns magnetic acceleration due to repulsion. My sketch below shows two Neodymium magnets that I am working with, Magnet A and Magnet B. Thir orientation is fixed so that they cannot twist, and they are confined to travel only in the…
user136789
- 21
2
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1 answer
calculation of electrical power required drive a toy car
i wanted to put a electrical motor into a toy car. i want to use an optimum motor with correct RPM (i know that with fixed power, higher RPM mean less torque). so here it goes.
i have a toy car with mass of M, static friction of Fs. wheel with…
user3760537
- 21
2
votes
1 answer
Finding the accuracy of an accelerometer
I would like to measure and compare the accuracy of different accelerometers.
Obviously I must choose a reference, therefore I compare all the accelerometer with this reference and then decide which is the most precise.
How can I select this…
user3506463
- 25
2
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0 answers
Alignment of a triaxial accelerometer
I was wondering if someone could explain the alignment issues associated with a tri-axial accelerometer. It measures acceleration in terms of $g$. I have read some literature but I am unsure about the alignment issues involved.
branny12000
- 31
2
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1 answer
How to calculate the horizontal acceleration?
I am trying to measure the acceleration and deceleration of a car by using an 3 axis accelerometer which is build in an iPhone 5s. Placing the iPhone flat inside the car with the y axis to the top of the car this works pretty ok. But now I want to…
riik
- 123
1
vote
5 answers
What does the magnitude of centripetal acceleration actually represents?
A fan moving with an angular velocity of 5π rad/second has a centripetal acceleration of 175.185 m/s^2.The Centripetal acceleration doesnt express the change in velocity as it is constant. Then what does 175.185 m/s^2 actually represents?
1
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2 answers
Does the mass of a pulley affect the speed of an object that's hung over it?
Here is the question: a pulley has a mass M and an object of mass $m_1$ on a massless string is wrapped around it, does the mass of the pulley affect the acceleration of $m_1$?
My reasoning is that it wouldn't, because the acceleration of the…
matryoshka
- 805
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1 answer
Acceleration due to gravity
Why is it difficult to drink water inside the artificial satellite in the space?
I think one of the reasons is that there is no gravity in space and hence we cannot drink water. but I am not sure about this reason. So, please can anyone provide me a…
user335710
- 19
1
vote
1 answer
acceleration and time dilation
Is it true that a freely-falling body accelerates because, as time slows toward the center of the earth, each second is longer than the preceding one, giving the body further to travel? A simple yes or no will do it for me.
1
vote
1 answer
How do you determine how much does an object accelerate by gravity
Ok, so say i have an object that has a mass of 1kg and it "pulled" by a planet, i know the F = GmM/r^2 thing, but it gives newtons. How do i know how much the object accelerates towards the planet in for example meters?
DayDun
- 11
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2 answers
Can the law of the acceleration be applicable to a man falling from plane?
Is acceleration law
$a = \Delta v/\Delta t$
applicable on somebody who is falling from an air plane? Does the acceleration increase when some body is at some altitude and does his speed increases by $9.81 m/s$ every second (because of the gravity…
Maroxtn
- 123
0
votes
4 answers
Finding acceleration for L shaped movement
Acceleration is change of directions as well, let’s assume an object is travelling at 10 mph north, and turned west by the same speed of 10 mph to west and kept going that way. What would be the acceleration? As this is L shaped movement, I don’t…
