Pls help physics question

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

How can you increase the strength of an electromagnet?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?