An elevator of mass 4800kg is supported by a cable which can safely withstand a maximum tension of 60 000N. The maximum upward acceleration the elevator can have is
-
A.
2.5ms-2 -
B.
5.0ms-2 -
C.
7.5ms-2 -
D.
10.0ms-2
Correct Answer: Option A
Explanation
a = (frac{F}{m})
= (frac{60000 -(4800 times10)}{4800})
= 2.5ms-2