Figured it out
first change the equations to eliminate all variables that are not used in the problem.
Fr = 2IAdisk/c <-- area in this equation is only concerned with the area of the disk that is reflecting the beam, not the total area of the beam
intensity was not given as a known...
c)
once you have acceleration you have to use one of the motion equations
what you need is time and you have v0 (initially velocity), acceleration, and distance
use the equation
d=v0t+(1/2)at2
solve for t
luckily we know that the box starts at rest so v0 = 0 and that portion of the...
b)
First youre forgetting an important equation, force of friction
Ff=\muk*Fn = 0.23 * 247.834 N = 57.002 N
you used the normal force instead of the force of friction
next find the force of the push Fp
because it is downward at a 35o angle only a portion of the force is applied in the x...
Homework Statement
A laser beam of power P and diameter D is directed upward at one circular face (of diameter d < D) of a perfectly reflecting cylinder. The cylinder is levitated because the upward radiation force matches the downward gravitational force. If the cylinder's density is ρ...