Posted by Alexis on Saturday, September 29, 2012 at 5:53pm.
A hydraulic lift office chair has its seat attached to a piston with an area of
. The chair is raised by exerting force on another piston, with an area
of 4.12 cm2
. If a person sitting on the chair exerts a downward force of 219 N,
what force needs to be exerted on the small piston to lift the seat?
Science - Damon, Saturday, September 29, 2012 at 6:18pm
Force on big piston/force on small piston = 11.2/4.12 = 2.72 which is the mechanical advantage of our hydraulic jack machine
219/2.72 = 80.5 Newtons
That is a pretty light person by the way.
Science - Mattie, Tuesday, May 6, 2014 at 9:25am
Science - shae, Saturday, October 17, 2015 at 9:47pm
11.2/4.12=2.72, 219/2.72=80.5 N
thanks Ms. Smith!
Science - fag bagger, Wednesday, February 17, 2016 at 3:13pm
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