5 Steps to a 5: AP Physics 1: Algebra-Based 2017 by Jacobs Greg

Author:Jacobs, Greg [Jacobs, Greg]
Language: eng
Format: epub
Publisher: McGraw-Hill Education
Published: 2016-08-04T16:00:00+00:00

Look at that: solve for μ , and the masses cancel. You can plug in the 20-m/s speed and the 100-m radius to get μ = 0.4. A car of any mass can go around this curve, as long as the coefficient of friction is at least 0.4. 2

Torque

FACT: The torque τ provided by a force is given by the equation

I write the symbol “⊥” by the d to emphasize that the distance we want is the perpendicular distance from the line of the force to the fulcrum. 3 Usually that’s an easy distance to visualize.

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