a overhead gantry crane that is equiped whith a crane and hook block and reeved with 6 parts of line is lifting 12 tons what is the load on the haul line
A.2000lbs
B.6000lbs
C.8000lbs
D.4000lbs
please show the formula
To find the load on the haul line of an overhead gantry crane, you can use the formula:
Load on the haul line = (Load to be lifted) / (Number of parts of line reeved)
In this case, the load to be lifted is given as 12 tons and the number of parts of line reeved is 6.
Using the formula, we can calculate the load on the haul line:
Load on the haul line = 12 tons / 6 parts of line
= 2 tons per part of line
To convert the load from tons to pounds, we need to multiply it by 2000 (since 1 ton = 2000 pounds):
Load on the haul line = 2 tons/part of line * 2000 pounds/ton
= 4000 pounds/part of line
Therefore, the load on the haul line is 4000 pounds.
So, the correct answer is:
D. 4000 lbs