質問: 1/2mv^2 + 1/2iw^2 1/2mv^2 + 1/2iw^2 t=2pi/w orbital motion is a combination of
回答: physics 1 exam 3 review chapter 10 rotational kinematics and energy - axis of rotation- center point of where the rotation is occurring - angular position- angle measured from reference line, θ (radians) - θ > 0 counterclockwise rotation from reference line - θ < 0 clockwise rotation from reference line - 1 rev. = 360= 2pi rad - θ is dimensionless - angular velocity (w) (avg.)=δθ /δt since rad is dimensionless, it is simply s^-1 - unit: rad/s - w> 0 counterclockwise rotation from reference line - w< 0 clockwise rotation from reference line - magnitude of angular velocity is angular speed - period- the time to complete one revolution (t) - t=2pi/w - unit: seconds (s