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Mechanical Properties Of Fluids

Question
CBSEENPH11020729

Which one of the following equations of motion represents simple harmonic motion? 

  • Acceleration = -ko x +k1x2

  • Acceleration =-k(x+a)

  • Acceleration = k (x+a)

  • Acceleration = kx

Solution

B.

Acceleration =-k(x+a)

Acceleration space proportional to space left parenthesis displacement right parenthesis

straight A proportional to space minus straight y
straight A space equals space minus space straight omega squared straight y
straight A space equals space minus space straight k over straight m straight y
straight A space equals space minus space ky
Here comma space straight y space equals space straight x space plus straight a space
therefore comma space
acceleratio space equals space minus straight k space left parenthesis straight x space plus straight a space right parenthesis