6. At the instant shown, point P on the cable has a velocity Vp = 12 m/s, which is increasing at a rate of ap = 6 m/s. Determine the power input of motor M at this instant if it operates with an efficiency E = 0.8. The mass of block A is 50 kg. 12 m/s 6m/s M
6. At the instant shown, point P on the cable has a velocity Vp = 12 m/s, which is increasing at a rate of ap = 6 m/s. Determine the power input of motor M at this instant if it operates with an efficiency E = 0.8. The mass of block A is 50 kg. 12 m/s 6m/s M
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:6. At the instant shown, point P on the cable has a velocity Vp = 12 m/s, which is increasing at a rate of
ap = 6 m/s?. Determine the power input of motor M at this instant if it operates with an efficiency E =
0.8. The mass of block A is 50 kg.
12 m/s
6 m/s²
7. The 2-kg collar is given a downward velocity of 4 m/s when it is at A. If the spring has an
unstretched length of 1 m and a stiffness of k = 30 N/m, determine the velocity of the collar at S =1m.
4 m/s
= 30 N/m
8. The cylinder has a mass of 20 kg and is released from rest when h = 0. Determine its speed when h
= 3 m. The springs each have an unstretched length of 2 m.
2 m
2 m
www
= 40 N/m
k = 40 N/m
9. The collar has a mass of 2 kg and is attached to the light spring, which has a stiffness of 30 N/m and
an unstretched length of 1.5 m. The collar is released from rest at A and slides up the smoothi
the action of the constant 50-N force. Calculate the velocity v of the collar as it passes position B.
od under
B
1.5 m
30°
50 N
k = 30 N/m
-2 m
For educational purposes only.
Page | 22
10. Calculate the maximum velocity of slider B if the system is released from rest with x=y. Motion is
in the vertical plane. Assume that friction is negligible. The sliders have equal masses.
0.9 m
B
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