
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN: 9781305501607
Author: Andrew Pytel And Jaan Kiusalaas
Publisher: CENGAGE L
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Transcribed Image Text:6. A motor winds the rope in B with a constant acceleration aB. Because of the
pulley system, the mass m in A slides in this way to the left over a horizontal
axis. Between m and the left end point of the horizontal axis, there is a spring
(constant k, unstretched length l). The coefficient of kinetic friction between m
and the axis is Pk. When Sa equals 1.5 m, VB equals 6 m/s. For this situation:
a) determine at that instant the velocity vA and the acceleration aa of A,
b) determine all the forces that apply on A,
c) determine the force with which the motor pulls the rope.
Data: ав 3
2 m/s2, m =
2 kg, k = 150 N/m, l
2 m, µk = 0.3
%D
В
SA
2m
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