An elevator car weighs 5500 N. If the car accelerates upwards at a rate of 4.0 m/s2, what is the tension in the support cable lifting the car?

Question

Thanks for helping.

10577 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-12-18T00:04:30

#"The tension in the support cable is 7755 Newtons."#

enter image source here

#G:"represents weight of elevator(the red vector)"#
#F:"Force by inertia(the blue vector)"#
#T:"Tension in the cable"#

#T=F+G#

#T=m*a+G#

#m:"represents mass of elevator"#
#G=m*g#

#5500=m*g#

#m=5500/(9.81)#

#T=5500/(9.81)*4+5500#

#T=5500(4/(9.81)+1)#

#T=5500(0.41+1)#

#T=5500*1.41#

#T=7755" "N#