Posts by Granger
Total # Posts: 4
A loaded penguin sled weighing 73 N rests on a plane inclined at angle θ = 21° to the horizontal (Fig. 6-23). Between the sled and the plane, the coefficient of static friction is 0.24, and the coefficient of kinetic friction is 0.19. (a) What is the minimum magnitude...
October 1, 2011
a) F = ma |F| = 84kg*-3.5m/s^2 b)v=0 x= -(41m/s)^2/(2(-3.5m/s^2)) c)W is going in the -x direction because it's decelerating W= -Fd Then you just apply these equations to d,e, and f.
October 28, 2010
m=1kg L=.56m change in KE + change in PE = E .5mv^2f + mghf = .5mv^2i + mghi Even though this problem is a circle, the height variable in the potential energy equation shouldn't differ. a)Use the bottom of the circle for h=0 mghi is canceled. work = change in KE = .5mv^2f...
February 18, 2008