How are electric charges similar to magnetic poles? how are they different?

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

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

In a system, when potential energy decreases, then entropy also decreases. true false