Q1/ The collar weighs 3 kg and is connected to a light spring. The collar moves up the rod at 1.5 2.5 m m/s as it passes point A, under the influence of a constant 45-N force, and the coefficient of 30 kinetic friction between the collar and the rod is 45 N (0.2). If the collar's velocity v when it passes point B is 3.5 m/s, determine: 2 m (a) The work from A to B. (b) The stiffness of the spring if the unstretched length is 1.3 m.
Q1/ The collar weighs 3 kg and is connected to a light spring. The collar moves up the rod at 1.5 2.5 m m/s as it passes point A, under the influence of a constant 45-N force, and the coefficient of 30 kinetic friction between the collar and the rod is 45 N (0.2). If the collar's velocity v when it passes point B is 3.5 m/s, determine: 2 m (a) The work from A to B. (b) The stiffness of the spring if the unstretched length is 1.3 m.
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Transcribed Image Text:Q1/ The collar weighs 3 kg and is connected to a
в
light spring. The collar moves up the rod at 1.5
2.5 m
m/s as it passes point A, under the influence of a
constant 45-N force, and the coefficient of
30°
kinetic friction between the collar and the rod is
45 N
(0.2). If the collar's velocity v when it passes
ww
point B is 3.5 m/s, determine:
2 m
(a) The work from A to B.
(b) The stiffness of the spring if the unstretched
length is 1.3 m.
Q2/ The 150 box being pulled in 14 sec by the
M
winch M, If the winch efficieney is c = 0.65 and
the power input is 20 Kw. Determine the speed
of the box if the coefficient of kinetic friction
between the box and the plane is uk = 0.2.
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