he magnitude or the torque about the enter of ma se As B. The moment or inertial
ID: 1390490 • Letter: H
Question
he magnitude or the torque about the enter of ma se As B. The moment or inertial or the epool O. OO98 o 01 B B. O.O4 O. OB Problem 3 A ma 88 of o 25 executes simple harmonic oscillations. Its w displacement as a function of time ok (t) (126th is given by all quantities given in SI units The velocity of the mass har a maximum magnitude at which of the s) following times (in D. O. 1206. C. o 187 B. 0.125 19, The frequency of the oscillator is Hz. D. 396 C. 126 20 0.05 when the displacement of the mass is maxi its accelerat magnitude D. 794 0.05 when the magnitude of the displacement of the mass is mi velocity has a magnitude Tm/ B D. 194 6.3 B. 0.05Explanation / Answer
9 problem
Given that
X(t) = 0.05 sin(126t)
so
V(t) = 126 * 0.05 cos (126t) = 6.3 cos(126t)
when t = 0, v = 6.3 m/s this is maximum velocity
Hence option A is correct choice.
10 problem
from the equation w = 126 rad/s
Therefore frequency f = w / 2 * pi
= 126 / 2 * 3.14
= 20. 6 Hz
Hence option B is correct choice
Problem 11
Acceleration = w2 A = 126 * 126 * 0.05 = 793.8 m/s2
Hence option D is correct choice.
Problem 12
v = w A = 126 * 0.05 = 6.3 m/s
Hence option C is correct choice.
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