Unformatted text preview: ng motion as the disk speed from
When placed on this surface, the center oflapsed time during the to the right with a moves of vA1
t rotation rate of ω1 , 1 shown in Figure Figure 2.
and has a counterclockwise he position in Figureas to the position in 1 below. In Figure 2 below is
Problem V.57 shown the instant at which the disk ceases to slip as it continues to move on the horizontal surface. You must provide an accurate free body diagram of the disk in order to receive full credit
f this problem:
Find: Foror your work. a) determine the speed of A, vA2 , at the instant in Figure 2 when the
disk ceases to slip on the horizontal surface, and b) determine the elapsed time during the motion
HINT: from the using both the linear impulsemomentum equation and the angular
as the disk moves Consider position in Figure 1 to the position in Figure 2. impulsemomentum equation on the disk in solving this problem. !1 M
FIGURE 1 A
R vA1
µk slipping !2
FIGURE 2 A
vA2 no slip Use the following parameters in your analysis: M = 50kg , R = 0.5m, µk = 0.3, vA1 = 5m/sec and
ω1 = 8rad/sec....
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 Spring '09
 Force, Mass, Rigid Body, Angular velocity, Rigid Body Kinetics

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