The mass of a lift is 600kg. The max tensile force that the cable supporting the lift can withstand is 7kN. calculate the max upward acceleration allowed.

Question

anonymous · Answer

11.666666666666666666666666666667 m/sec2

anonymous · Answer

can you please show your calculation?

anonymous · Answer

what formulae did you use?

anonymous · Answer

the answer is 1.867 m/s2. just dont know how to calculate it.

anonymous · Answer

You sure?  I get .86.  Its a tension problem so it should be in equilibrium.  I am getting .86 m/s2

anonymous · Answer

are'nt you forgetting about gravity? 10
m/s2

anonymous · Answer

1.867 is the answer in my book so should be right

anonymous · Answer

T= W + ma= mg +ma

anonymous · Answer

T= 7000N = 600 (10 +a)
        70/6= 10 +a
        70/6 -10 =a
11.67 -10= a
1.67= a

anonymous · Answer

They used 9.8 not 10, so you do get the 1.87 m/s2

anonymous · Answer

well done! thanks.