Inertial Frames of Reference: Examining Forces & Acceleration

AI Thread Summary
Inertial frames of reference are often debated as ideal concepts, with some arguing that no true inertial frame exists. When a particle's acceleration is zero in an inertial frame, it does not necessarily imply that no force acts on it. A particle at rest in a frame can indicate that the frame is inertial and the resultant force on the particle is zero, or that the frame may be non-inertial with a nonzero resultant force. The discussion highlights confusion over which scenarios are correct, with options three and four being considered valid. Understanding these concepts is crucial for grasping the principles of forces and acceleration in physics.
jay ambekar
Messages
26
Reaction score
0
so here r ma doubts
=> it is sometimes heard tat inertial frame of referance is only an ideal concept and no such inertial frame exists.comment.

=>the accelaration of a particle is zero as measured from an inertial frame of referance . can we conclude tat no force acts on it?

=> a particle stays at rest as seen in a frame. we can conclude tat
1) the frame is inertal
2) resultant force on the particle is zero
3)the frame may be inertial but the resultant force on the particle is zero
4)the frame may be noninertial but there is a nonzero resultant force.
(two of the above options are correct. which r those n why?)

thnx in advance
 
Physics news on Phys.org
This sounds like your Homework. I am not going to do your homework for you.
 
im not asking u to solve anything...these r conceptual doubts
 
There are no 'doubts' in your question. What do you think the answers are?
 
amm...i hav no idea abt the first two...i think the last one is (3) and (4)
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Back
Top