Homework Help: Physics (is this right?)

Posted by Henri on Friday, April 24, 2009 at 5:37pm.

A turnbuckle is needed to apply an 8kN force on a cable. If the efficiency of the turnbuckle is 40% and the force applied is 159.155N with a lever of 20cm in length.
a)Find Mechanical Advantage:
M.A.=Load/Effort
M.A.=8000/159.155
M.A.=50.265 (ans.)

b)Find the velocity ratio:
Efficiency=M.A./V.R.
V.R.=M.A./eff.
V.R.=50.265/0.4
V.R.=125.66 (ans.)

c)Find the mean pitch of thread:
V.R.=distance moved by effort/dist. moved by load
V.R.=2piL/2*pitch of thread
2*pitch of thread=2pi*200mm/125.66
Pitch of thread=10/2
Pitch of thread=5mm (ans.)
Is this correct?

Physics (is this right?) - Leon, Tuesday, April 13, 2010 at 5:49pm
yes

Answer this Question

Related Questions

physic - A turnbuckle is needed to apply an 8kN force on a cable. If the ...
Physics - A turnbuckle is needed to apply an 8kN force on a cable. If the ...
Physics - A turnbuckle is needed to apply an 8kN force on a cable. If the ...
Please check my math - A turnbuckle is needed to apply an 8kN force on a cable. ...
Please check my math - A turnbuckle is needed to apply an 8kN force on a cable. ...
Velocity Ratio - Does my work make sense? A turnbuckle is needed to apply an 8kN...
Physical Science - In a pulley sytem with 100% effieciency with ten support ...
physics - An elevator is being lifted up an elevator shaft at a constant speed ...
Physics - A toy train is moving on a track from right to left. You are told that...
Physics - Hello agein, a biger question this time. Height difference H 180 ...

For Further Reading

First Name:
School Subject:
Answer: