Is my relative motion analysis correct for this engineering problem?

AI Thread Summary
The discussion revolves around the application of relative motion analysis in solving an engineering problem. The user applied the formula for relative velocity, resulting in an angular velocity of 2 rad/s counterclockwise. They seek confirmation of their calculations and the appropriateness of using fundamental physics concepts in this context. The inquiry emphasizes the intersection of physics and engineering principles. Overall, the user is looking for validation of their solution approach.
Precursor
Messages
219
Reaction score
0
Homework Statement
2sbriuo.jpg



The attempt at a solution

I used the concept of relative motion analysis for velocity:

VB = VA + VB/A
(4) = (-2) + ω(3)
ω = 2 rad/s (CCW)

Is this correct?
 
Physics news on Phys.org
I know this is actually an engineering problem but it uses fundamental physics concepts, so it shouldn't be beyond the scope of this forum.

So can anyone confirm my solution?
 
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 .
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...
Back
Top