All Questions
Tagged with terminology newtonian-mechanics
118
questions
0
votes
4
answers
87
views
What is the tangential component of any vector?
There's a statement I discovered in the book I am reading which says
Kinetic energy changes only when speed changes and that happens when the resultant force has a tangential component.
Does that ...
- 91
0
votes
1
answer
66
views
What is difference between normal force and reaction force? [duplicate]
according to my book the perpendicular component of reaction force is called normal force when there is contact between two bodies. I can not understand that how for example when we jump we pushes the ...
user379089
0
votes
2
answers
175
views
What is normal force and when it acts?
what are contact forces and according to: https://www.physicsclassroom.com/class/newtlaws/Lesson-2/Types-of-Forces
it says there are 6 types of contact forces. I am having doubt with applied force and ...
user379089
0
votes
2
answers
91
views
What is an example of a contact force that is not a normal force?
I have a question about contact force and normal force.
whenever two bodies are in contact and one body tries to push another body there will be a normal force acting between them. like when we push ...
user379089
0
votes
2
answers
534
views
Difference between Displacement from Equilibrum and Amplitude of SHM
I'm currently studying Simple Harmonic Motion. What is the difference between the amplitude of the simple harmonic motion, and its displacement from equilibrium?
- 3
0
votes
1
answer
103
views
Confusion about rolling motion
why is rolling motion translational? Isn't translational motion a motion where a body moves without changing its orientation?But in rolling motion,the object is rotating i.e changing its orientation ...
- 135
2
votes
2
answers
91
views
Why is the mass of small elements taken as $∆m$ in center of mass of a continuous body?
A continuous body has continuous distribution of mass. Doesn't $\Delta m$ mean $m_f - m_i$? But, is the mass Changing? If yes, how is the mass varying? Why is the mass of the small elements in a body ...
- 41
0
votes
3
answers
90
views
When is a property 'time dependent' or constant?
If we take an object going through motion in an experiment where it's mass is not changed in each run we would say it's mass is 'constant' and 'does not depend on time', taking the derivative of it's ...
- 263
0
votes
2
answers
60
views
Is a 'resultant' a single force acting on an object?
If I have two forces $A$ and $B$ acting on an object, in a lot of cases (especially Archimedes law) we take these two forces and mathematically sum them, which gives the value of a single force ...
- 263
1
vote
1
answer
62
views
Is there a name for linear/homogeneous Galilean transformations?
In Special relativity, the transition charts are Poincaré transformations and linear/homogeneous Poincaré transformations are called Lorentz transformations. (I distinguish between affine ...
- 1,801
5
votes
6
answers
2k
views
What actually is impulse?
In my textbook it is mentioned that “impulse is used to get an idea of about the change in dynamical state of a moving particle”,but what does impulse actually mean?
- 79
1
vote
2
answers
76
views
Why is the self-weight of a cable not uniformly distributed?
I have learned that a free cable that is hanging with only its self-weight to consider will form a caternary while a cable with a uniformly distributed load forms a parabola. Why is the self-weight of ...
- 163
0
votes
1
answer
100
views
Is a falling tree basically a giant nutcracker?
When a tree falls, either cut down or because it’s roots can no longer hold it upright, does it behave as a giant nutcracker? It seems like it would, in which case I imagine standing near the base as ...
- 187
-2
votes
1
answer
262
views
Distinction between mechanics and thermodynamics [closed]
I claim to be able to put the distinction between mechanics and thermodynamics as follows:
"In mechanics, energy is related to mass, whereas in thermodynamics, energy is related to a particle or ...
- 7
6
votes
3
answers
842
views
Difference between point force and force
In high school, we used to draw a free diagram, and we are asked what are the forces acting on the object. When we represent these forces, we represent them using vectors going out from a point called ...
- 231