Consider the sinusoidal voltage v (t) = Vm sin Οt where Vm = the amplitude of the sinusoid Ο = the angular frequency in radians/s Οt = the argument of the sinusoid It is evident that the sinusoid repeats itself every T seconds; thus, T is called the period of the sinusoid.
Force: The unit of forces the Newton (N) where one newton is one-kilogram meter per second squared. Thus, force, in Newton's π = ππ Where m is the mass in kilograms and a is the acceleration in meters per second squared. Gravitational force, or weight, is mg, where π = π. ππ π/π π . Example: A mass of 5000 g is accelerated at 2 m/s2 by a force. Determine the force needed? Force = mass x acceleration = 5kg x 2m/s2 = 10 kg m/s2 = 10 N. Work: The unit of work or energy is the joule (J) where one joule is one Newton meter.