I cant load the site, I will try later. The idea is that you sum moments (clockwise+, counterclockwise-) and set equal to zero. A moment is Force*distance*sinAnglebetweenthem(usually 90 degrees).
y-direction: N1 + N2 - Fg = 0
x-direction: L1 x N1 - L2 x N2 = 0
Fg = mg
you just have to add w w w to the website
can u explain to me what you mean by y direction is equal to and for the force *distance *the angle i don't know the angle for the question
Since we're only trying to find the Normal Force exerted by the two hands, we automatically assume that it's in mechanical equilibrium, thus equaling to zero.
okay but can you explain to me how to find N1 and N2
can you please Anonymous and bobpursley explain this to me.
Please and thank you
isolate N1 for the first eq:
N1 = Fg - N2
N1 x L1 - N2 x L2 = 0
sub N1 from eq 1 to eq 2.
(Fg - N2)L2 - N2 x L2=0
(Fg - N2 x L2) - N2 x L2 = 0
Fg = N2 x L2 + N2 x L1
Fg = N2(L2+L1)
since we already know Fg = mg, we isolate for N2
N2 = Fg/(L2+L1)
Thus the normal for N2 is found. Now look back to eq 1 again:
N1 + N2 - Fg = 0
then isolate for N1 by substituting the found value N2.
Make sure you convert cm to m.
Once the N1 is found, add the to Normal forces and voila!
Answer this Question
Physics - A man doing push-ups pauses in the position shown in the figure . His ...
AP Physics - Static Equilibrium - A man doing push-ups pauses in the position ...
calculus - Hi, I have online homework for calculus and I have to input two ...
Budget project - Anonymous - http://www.jiskha.com/display.cgi?id=1300146111 = ...
AP Physics - Equilibrium - The Achilles tendon is attached to the rear of the ...
Physics - A block with a mass of 5.0 kg is held in equilibrium on an incline of ...
physics - The figure shows a person whose weight is W = 670 N doing push-ups. ...
physics - A man doing push-ups pauses in the position shown in the figure . His ...
phyics - The figure shows a person whose weight is W = 500 N doing push-ups. ...
physics - hey, i was wondering if someone could explain and help me with this ...