Tell me what the purpose of living if in a few years we die?

Explain using examples, what is simple harmonic motion and why it is an important area of study in physics.

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

Which is a substance that can be separated by physical means and is not the same throughout