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Rotational Motion - Physics

R-1 11/8/2013 University of Colorado at Boulder Rotational Motion We are going to consider the Motion of a rigid body about a fixed axis of rotation. The angle of rotation is measured in radians: s(rads) (dimensionless)r Notice that for a given angle , the ratio s/r is independent of the size of the circle. Example: How many radians in 180o? Circumference C = 2 r rs =radsrr rads = 180o, 1 rad = Angle of a rigid object is measured relative to some reference orientation, just like 1D position x is measured relative to some reference position (the origin). Angle is the " Rotational position". Like position x in 1D, Rotational position has a sign convention. Positive angles are CCW (counter-clockwise). Definition of angular velocity : d = (rad/s)dtt , ( like dxxv , v dtt ) units rad = s In 1D, velocity v has a sign (+ or ) depending on direction.

Rotational Motion We are going to consider the motion of a rigid body about a fixed axis of rotation. ... is due to change in magnitude of velocity, speed v a tan and a r are the tangential and radial components of the acceleration vector a. a 22 ... If several torques are applied, the net torque causes angular acceleration: ...

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Motion in 1D - Physics

physicscourses.colorado.edu

Example: Projectile Motion: A projectile is fired straight up from the ground with an initial speed of |v o | = 10 m/s. Describe the velocity vs. time. (Assume negligible air resistance.) Choose upward as the (+) direction and set the ground at y = 0. y o = …

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Operational Amplifiers and Negative Feedback

physicscourses.colorado.edu

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physicscourses.colorado.edu

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Static Equilibrium - Physics

physicscourses.colorado.edu

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pa01000188.schoolwires.net

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physics.bu.edu

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w3.ric.edu

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camillasenior.homestead.com

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www.phys.ufl.edu

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www.sas.upenn.edu

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www.smcisd.net

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