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Olin [163]
4 years ago
6

. An early method of measuring the speed of light makes use of a rotating slotted wheel. A beam of light passes through a slot a

t the outside edge of the wheel, travels to a distant mirror, and returns to the wheel just in time to pass through the next slot in the wheel. One such slotted wheel has a radius of 5 cm and 500 slots at its edge. Measurements taken when the mirror was L = 500 m from the wheel indicated a speed of light of 3.0 x10^5 km/s.. What was the (constant) angular speed of the wheel?. (b) What was the linear speed of a point on the edge of the wheel?
Physics
1 answer:
amid [387]4 years ago
8 0
The time to travel to the mirror and back was 
<span>t=450/3E+8 </span>

<span>The distance from one slot to another is </span>
<span>2*pi*0.05/550 </span>

<span>the time to rotate the distance was </span>
<span>t=2*pi/(w*550) </span>

<span>combine </span>
<span>2*pi/(w*550)=450/3E+8 </span>
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