Force on a Disk
A solid disk of radius Rdisk = 3 cm is illuminated by a 300 W laser beam propagating to the right and centered on the disk. The beam has a circular cross section of radius Rbeam = 5 cm, and the laser wavelength is 514 nm. You may assume that the intensity of the laser is uniform across the beam diameter.
The material of the disk is such that, at this wavelength, it reflects 8 % of the incident light, transmits 52 %, and absorbs the rest.
What is the net force on the disk due to the light pressure?
Force = N
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