Civil Engineering - Applied Mechanics - Discussion

Discussion Forum : Applied Mechanics - Section 1 (Q.No. 20)
20.
The maximum velocity of a body vibrating with a simple harmonic motion of amplitude 150 mm and frequency 2 vibrations/sec, is
188.5 m/sec
18.85 m/sec
1.885 m/sec
0.18845 m/sec.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
8 comments Page 1 of 1.

Chuck said:   6 years ago
Displacement = Amplitude x sin(angular frequency x time).

y = Asin(ωt) where y = displacement, A = amplitude,
ω = angular frequency, t = time.

Velocity v = ωAsin(ωt).

and,
v(max)= Aω,

Where ω = 2πf,
f= frequency.
ω = 2*3.14*2 = 12.56.

Therefore, v = 0.15*12.56 = 1.884.

Vidhya said:   7 years ago
Nice explanation. Thank you @Abhay.
(1)

Abraham sarker said:   7 years ago
Thank you @Abhay.

Prassu said:   7 years ago
Thank you @Abhay.

Subha said:   8 years ago
Thank you @Abhay.

Abhay said:   10 years ago
Displacement = Amplitude x sin(angular frequency x time).

y = Asin(ωt) where y = displacement, A = amplitude,
ω = angular frequency, t = time.

Velocity v = ωAsin(ωt).

and,
v(max)= Aω,

Where ω = 2πf,
f= frequency.
ω = 2*3.14*2 = 12.56.

Therefore, v = 0.15*12.56 = 1.884.

Dona said:   1 decade ago
Max velocity of SHM is given by;

Vmax = rw.

= w(in radians)*0.15.

= 12.566*0.15 = 1.8849 m/s.

Nitesh sankpal said:   1 decade ago
v = Aw sin(wt) where A = 150mm and w = 2*3.14*f = 2*3.14*2 = 12.56.

Now, v=150*12.56 = 1884mm/sec = 1.884m/sec.
(1)

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