A body is executing simple harmonic motion with an angular frequency of 2 rod/sec. The velocity of the body at 20mm displacement, when the amplitude of motion is 60mm, is
A. 90mm/s
B. 113mm/s
C. 118 mm/s
D. 131 mm/s
Answer:B
A body is executing simple harmonic motion with an angular frequency of 2 rod/sec. The velocity of the body at 20mm displacement, when the amplitude of motion is 60mm, is
A. 90mm/s B. 113mm/s C. 118 mm/s D. 131 mm/s