Table #2 Frequency
f, Hz
The Difference
The Difference
Between the Positions, Between the Positions,
Wavelength 2, m
Speed
of
1 = 2 (N2 avg - N1 avg) Sound
N2 avg - N1 avg = N2, m
v, m/s
N2 avg - N1 avg = N2,
cm
42.2
39.8
32.65
16.62
0.422
0.398
0.844
0.796
384
426.7
512
1024
324.1
339.7

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards