E B A

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E B A 1 (38.16 KiB) Viewed 9 times

A 600 kg elevator has a counterweight A with a mass of 200 kg. A
motor supplies a constant force F on the cable at B. Neglect the
mass of the cable and pulleys. The elevator moves with a speed of
10 m/s and rises at 40 m from rest. Hint: Virtual work is
applicable to tension T only.
force at cable B
1. What is the tension in the cable, in _____ N, at A?
2.The acceleration of the counterweight A is _____
m/s2.
3. The constant force, F, in the cable at B is _____ N.
4. The time it took for the elevator to move 40 m from rest is
_____ s.
5. The distance travelled by the block at a time of 3 seconds
starting from rest is _____ m.
The acceleration of the counterweight A is _____
m/s2.
E B A