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juliaduenkelsbu
11.07.2019 •
Physics
An elevator (mass 4100 kg) is to be designed so that the maximum acceleration is 0.0400g. what is the maximum force the motor should exert on the supporting cable? incorrect: your answer is incorrect. n what is the minimum force the motor should exert on the supporting cable?
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Ответ:
The maximum force on the supporting cable is 80688 N.
The minimum force on the supporting cable is -164 N.
Explanation:
For maximum force movement of elevator is in upward direction. Thus, equation of motion is given by,
ma = T - mg
where m is the mass of elevator
a is acceleration of elevator
g is acceleration due to gravity
T is the maximum tension in the supporting cable
T = ma + mg
T = m (a + g)
T = 4100 ( 0.04g + 9.8)
T = 80688 N
This is the maximum force on the supporting cable.
For minimum force movement of elevator is in downward direction. Thus, equation of motion is given by,
ma = T - mg
where m is the mass of elevator
a= -0.04g is acceleration of elevator because elevator is moving downward
g is acceleration due to gravity
T is the minimum tension in the supporting cable
T = ma + mg
T = m (a + g)
T = 4100 ( 9.8 - 0.04g)
T = -164 N
This is the minimum force on the supporting cable.
Ответ:
import math
num=int(input("Enter a number: "))
x=math.fabs(num)
y=math.sqrt(x)
print(y)
Explanation: It will get the square root, then it will get the absolute value of the square root.