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jlmessick88
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Homework Statement
You slowly back away from a plane mirror at a speed of 0.10 m/s
With what speed does your image appear to be moving away from you?
You slowly back away from a plane mirror at a speed of 0.10 m/s
AI Thread Summary
When backing away from a plane mirror at 0.10 m/s, your image appears to move away from you at a speed of 0.20 m/s. This is because both you and the image move away from the mirror at the same speed of 0.10 m/s. Therefore, the relative speed between you and your image is the sum of both speeds. The conclusion that the image moves away at 0.20 m/s is confirmed as correct. Understanding this concept is essential for grasping reflections in physics.
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19.
For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Let's declare that for the cylinder,
mass = M = 10 kg
Radius = R = 4 m
For the wall and the floor,
Friction coeff = ##\mu## = 0.5
For the hanging mass,
mass = m = 11 kg
First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on.
Force on the hanging mass
$$mg - T = ma$$
Force(Cylinder) on y
$$N_f + f_w - Mg = 0$$
Force(Cylinder) on x
$$T + f_f - N_w = Ma$$
There's also...
This problem is two parts. The first is to determine what effects are being provided by each of the elements - 1) the window panes; 2) the asphalt surface. My answer to that is
The second part of the problem is exactly why you get this affect.
And one more spoiler:
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