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
Verified Correct Answer: A.
Physical Principles & Numerical Solution
a = \(\frac{F}{m}\)
= \(\frac{60000 -(4800 \times10)}{4800}\)
= 2.5ms-2
Source: Myschool Past Questions Archive (Record #28403)