Some small questions grouped together

  • Thread starter Thread starter ritwik06
  • Start date Start date
AI Thread Summary
A particle can describe a curved path without a force acting on it if observed from a non-inertial reference frame, where pseudo forces may be considered. The concept of inertial frames is debated, with some arguing that they are idealized since practical scenarios often involve absolute acceleration. When an object is placed far from any force-exerting bodies, the reference frame can be considered inertial, although confidence in this assertion may vary. The original poster expresses frustration over a lack of responses to their questions and seeks further engagement. Clarifying questions or providing more context may help elicit more responses.
ritwik06
Messages
577
Reaction score
0

Homework Statement


1. Is it possible for a particle to describe a curved path if no force acts on it? Is the answer reference frame dependent?
YES, when the body stays still but the frame describes a curved path. Then with respect to that frame the body will describe curves but no force would act on particle. Will we count pseudo force as a force?

2. It is sometimes heard that inertial frame of reference does not actually exists and is only an ideal concept. Comment.
I totally agree with the view. almost every thing practical has absolute acceleration. Ar my views compatible?

3. An object is placed far away from all objects that can exert force on it. A reference frame is taken by taking the origin and axes fix in this. Will th frame be necessarily inertial?
I think yes. But I am not very confident.
 
Physics news on Phys.org
ritwik06 said:

Homework Statement


1. Is it possible for a particle to describe a curved path if no force acts on it? Is the answer reference frame dependent?
YES, when the body stays still but the frame describes a curved path. Then with respect to that frame the body will describe curves but no force would act on particle. Will we count pseudo force as a force?

2. It is sometimes heard that inertial frame of reference does not actually exists and is only an ideal concept. Comment.
I totally agree with the view. almost every thing practical has absolute acceleration. Ar my views compatible?

3. An object is placed far away from all objects that can exert force on it. A reference frame is taken by taking the origin and axes fix in this. Will th frame be necessarily inertial?
I think yes. But I am not very confident.

Why aren't my questions answered?
As you can see, I have put on what I think is right. Do I need to do something more, in order that I get some help?
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Foucault Pendulum at the North Pole
Replies
9
Views
2K
Curved Path: Is it Possible Without a Force? | Reference Frame Dependence
Replies
2
Views
4K
A What are the forces acting on an air particle along a fluid streamline curve?
Replies
1
Views
1K
Will the frame be inertial if no forces act on it?
Replies
4
Views
2K
Solid disk rolling down an inclined plane -- Some conceptual questions
Replies
9
Views
2K
I Principle of relativity for proper accelerating frame of reference
3
Replies
144
Views
8K
I The Equivalence Principle as a Starting point of GR
Replies
44
Views
6K
I Non-Inertial Relativistic Dynamics
Replies
18
Views
1K
I Force on Scale in Rocket Scenario: Calculation & Discussion
Replies
33
Views
2K
Empirical and Definitional Content of Newton's Laws
3
Replies
117
Views
9K

Hot Threads

Recent Insights

Back
Top