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Question

Question: A particle of mass 10 g executes SHM of period of 3s and amplitude 5 cm. The acceleration when displ...

A particle of mass 10 g executes SHM of period of 3s and amplitude 5 cm. The acceleration when displacement is 2 cm is –

A

8π29\frac{8\pi^{2}}{9} cm s–2

B

9π28\frac{9\pi^{2}}{8} cm s–2

C

π2 cm s–2

D

2\sqrt{2}π2 cm s–2

Answer

8π29\frac{8\pi^{2}}{9} cm s–2

Explanation

Solution

| Acceleration | = ω2 × displacement

= 4π2T2\frac{4\pi^{2}}{T^{2}} × displacement = 4π29\frac{4\pi^{2}}{9} × 2 =8π29\frac{8\pi^{2}}{9} cm s–2