PROBLEM: a lift motor has 2 move a fully laden lift 4m between floors in 1.5s. the lift has a mass of 1850kg(ignore friction)
a. calculate the weight of the fully laden lift.
b. what is the upward force in the cable when the lift is moving at a constant speed?
c. what is the work done by the motor?
a. calculate the weight of the fully laden lift.
b. what is the upward force in the cable when the lift is moving at a constant speed?
c. what is the work done by the motor?
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a. Wt = m*g = 1850*9.81 = 18.1*10^3 N
b. 18.1*10^3 N
c. W = F*s 18.1*10^3*4 = 72.6 kJ
b. 18.1*10^3 N
c. W = F*s 18.1*10^3*4 = 72.6 kJ
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18.1*10^3 N??
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