PHY 2053 Study Guide - Quiz Guide: Acceleration, Rolling Resistance, Friction
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When the velocity is constant or the body is at rest a=0. If accelerating up, weight will be more, if accelerating downward, weight will be less. Proportional to the normal force and the coefficient of friction, uk. Maximum force that can be applied before moving. us>uk. A quarter multiplied by the density of air multiplied by the cross-sectional area multiplied by the velocity squared. There will be some speed at which the weight of a falling body is balanced by the drag force. The mass of the satellite does not matter. The speed and radius are linked (larger radius, smaller speed. Ratio of the arc length to the radius. Change in angle theta with time. omega=change in theta/change in time. Determines the direction of the angular velocity. curl fingers in the direction of the rotation, thumb points in the direction of angular velocity. The change in angular velocity over time. lowercase alpha.
