An elevator packed with people has a mass of 1800 kg.
a) the elevator accelerates upward (in...
An elevator packed with people has a mass of 1800 kg.
a) the elevator accelerates upward (in the positive direction) from rest at a rate of 1.5 m/s2 for 2.2 s. calculate the tension in the cable supporting the elevator in newtons.
b) the elevator continues upward at constant velocity for 9 s. what is the tension in the cable during this time in newtons?
c) the elevator experiences a negative acceleration at a rate of 0.65 m/s2 for 2 s. what is the tension in the cable, in newtons, during this period of negative accleration?
d) how far has the elevator moved above its original starting point in meters?
Answers: 1
Physics, 22.06.2019 13:20, monkeygaming274
Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.
Answers: 1
Physics, 22.06.2019 13:40, crayons18
An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.
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Mathematics, 28.02.2020 20:09
Mathematics, 28.02.2020 20:09
Mathematics, 28.02.2020 20:10