options for number 4 are there is not enough information yes, she is correct no,
ID: 1349735 • Letter: O
Question
options for number 4 are
there is not enough information
yes, she is correct
no, she has calculated a value that is too low
no, she has calculated a value that is too high
value: 12.00 points Gloria got an idea for a Chick-fil-a stunt, but things have gone horribly wrong, and she's stuck. rB rA ENT MOR CHIKIN Use these values to answer the questions about Gloria rA = 6.50 m = 2.75 m mG 230 kg g = 9.81 m/s2 (The bar is made of etherium, which has no mass and is infinitely strong.) 1) What is the value of the tension in the rope directly holding Gloria? 2) What is the value of the torque (about the fulcrum) produced by the tension TA? N-m (clockwise) 3) What is the value the tension in the rope at the opposite end from Gloria? 4) Gloria calculated that the upward (normal) force required by the fulcrum is 6080 N .Was she correct? Pick your responseExplanation / Answer
As the bar is in equilibrium net force and net torque on bar must be zero.
i.e sum of all the forces cting is zero
so from fig, TA = mG*g
T = 230*9.8
T = 2254 N
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Now let us find TB,
Apply net torque about fucrum,Tnet = 0
Sum of Clockwise moments = sum of anticlock wise moments
so TB*rB = TA*rA
TB = TA*rA/rB
= 2254*6.5/2.75
= 5327.63 N
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Let F is the force exerted by the flucrum on bar
again Summ of net torque = 0
and Net force F = 0
F - TB - TA = 0
F = TA + TB
= 2254 + 5327.63
= 7581.63 N
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Her Calcuated value is too low
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