Question

The screw has a single thread. If a total torque of 10.50 lb in is available to lift a weight, the heaviest weight that can be lifted directly by the screw, as described in class, is

Outside dia thread count thread friction coeff collar friction coeff collar dia
5/8 in 8 threads/in 0.10 0.06 0.6875 in
A. 72.3 lbf
B. 152.2 lbf
C. 80 lb
D. 154.3 ibt
E. 32 ibt

Answer 1

80 Ib ( C )

Step-by-step explanation:

The maximum force that can be lifted by this screw from the detailed calculation is 145.61 Ibf

Therefore from the options the closest heaviest weight that the screw can carry is 80 Ib

ATTACHED IS THE DETAILED SOLUTION