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July 31, 2014

July 31, 2014

Posted by **Sierra** on Sunday, January 30, 2011 at 6:09pm.

Figure 7-25

(a) What is the speed of the block at the bottom of the ramp?

(b) What is the energy dissipated by friction?

(c) What is the coefficient of friction between the block and the horizontal surface?

- physics -
**Damon**, Sunday, January 30, 2011 at 6:29pma)

(1/2) m v^2 = m g h

so

v = sqrt(2 g h)

b)

m g h

c)

mu m g * 12 = m g h

so

mu = h/12 = 3/12 = .25

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