A body is executing simple harmonic motion with an angular frequency 2 rad/sec. The velocity of the body at 20mm displacement, when the amplitude of motion is 60mm, is

A body is executing simple harmonic motion with an angular frequency 2

1.	A body is executing simple harmonic motion with an angular frequency 2 rad/sec. The velocity of the body at 20mm displacement, when the amplitude of motion is 60mm, is
Answer» 90 mm/s 113 mm/s 118 mm/s 131 mm/s Solution :`v=omegasqrt(A^(2)-y^(2))=2xxsqrt((60)^(2)-(20)^(2))=30sqrt(2)=113mm//s`