Question

ajutor la fizica urgent va rog frumos

Answer 1

m=20 g=0,02 kg

x=520sin5πt (cm) =>A=520 cm=5,2 m

pulsatia (omega )=5π rad/s

Pulsatia=2πv=>v=pulsatia/2π=5π/2π=2,5 Hz

E=kA^2/2=20•5,2^2/2=270,4 J