July 2010
Intermediate to advanced
524 pages
16h 56m
English
Content preview from Game Physics Engine Development, 2nd Edition
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412 Chapter 15 Resting Contacts and Friction
improve our engine’s realism. Then we’ll discuss how to improve its performance by
optimizing the code to do less unnecessary work.
15.7 Exercises
Exercise 15.1
Two blocks of mass 1 kg sit on top of one another. The bottom block is resting on the
ground.
(a) Calculate the reaction force that is ke eping the bottom block from sinking into
the ground.
(b) Calculate the reaction force keeping the top block from sinking into the bottom
block. For this question, assume gravity is 10 ms
−2
.
Exercise 15.2
Modify the code given in this chapter to support separate coefficients for static and
dynamic friction.
Exercise 15.3
Fo r this practical ex ercise you will need a selection of objects, some large and relatively
hea
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