An elevator weighing 16917 N is supported by a steel cable. What is the tension in the cable when the elevator is being accelerated upwards at a rate of #2.5m/s^2#? (#g=9.80m/s^2#)

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Answer 1 · 2017-10-05T07:43:54

#T=21232.56N#

there is a net force upwards since it is being accelerated upwards

#so

#F_("net")=ma#

if #T="tension in the cable"#

the net force is #T-16917#

the mass will be #16917/9.8#

#:.T-16917=16917/9.8xx2.5#

#:.T-16917=4315.56#

#T=4315.56+16917#

#T=21232.56N#