Problem $(2)$: A square board with a side dimension of $(L)$ that weighs $(W)$ slides at a constant velocity $(V_0)$ down

an inclined ramp with an angle of inclination $(a).$ The board is separated from the ramp by a thin film of water of

thickness $(h).$

Given the values of $a[$degrees$],L[cm],h[m],$ and $V_0$

$c\frac{m}{s},$ calculate $W[N].$ Assume that the velocity profile in

the water film is linear.

Givens:

$a=17\mathrm{.}319$ degrees

$L=45\mathrm{.}919cm$

$h=6\mathrm{.}212mm$

$V_0=51\mathrm{.}897c\frac{m}{s}$

answers:

$85\mathrm{.}361N$

$54\mathrm{.}454N$

$66\mathrm{.}275N$

$40\mathrm{.}93N$