Question
A mass of 0.1 kg executes SHM with amplitude 10 cm. Its
kinetic energy at the mean position is 8 Γ 10-3 J. What is its equation of motion if the initial phase is 45Β°?Solution
The mass m=0.1kg. The amplitude A=10cm=0.1m. The kinetic energy at the mean position is the total energy of the SHM: 
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