- #1
crutts
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1. The top pulleys of a Weston differential pulley block have diameters of 210mm and 190mm. Determine the effort required to raise a load of 150kg if the efficency of the system is 35%.
What is the work done in overcoming friction when the load is raised through a height of 2.5m?
I did some working out and got:
effort = load/number of pulleys = 150/2 = 75 (what units?)
and work done= (150x9.8) x 2.5 = 3677.6 N/M
I did 150x9.8 to get Newtons.
Is this correct?
Cheers Joe
What is the work done in overcoming friction when the load is raised through a height of 2.5m?
I did some working out and got:
effort = load/number of pulleys = 150/2 = 75 (what units?)
and work done= (150x9.8) x 2.5 = 3677.6 N/M
I did 150x9.8 to get Newtons.
Is this correct?
Cheers Joe