In a museum exhibit, three equal weights are hung with identical wires, as shown

Question

In a museum exhibit, three equal weights are hung with identical wires, as shown in the figure. Each wire can support a tension of no more than 87.0 N without breaking. Start each of the following parts with an appropriate free-body diagram.(Figure 1)

What is the maximum value that W can be without breaking any wires?

Under these conditions, what is the tension in the top wire?

Under these conditions, what is the tension in the middle wire?

Under these conditions, what is the tension in the lowest wire?

Explanation / Answer

here,

maximum tension for each wire = 87 N

Part A:

assuming each wire has equal load ( never actually true)

3 T = max load

any slight unbalance and the overloaded wire breaks

maximum W = 87 / 3 = 29 N

Part B , C , D

Tension in Wire A(Top Wire) = T = 87 N
Tension in wire B(Middle Wire) = T/2 = 87 / 2 = 43.5 N
Tension in wire B(Lowest Wire) = T/3 = 87 / 3 = 29 N

NOTE: sol dia
_____________________
l T=87 N
O
l T=43.5N
O
l T=29 N
O

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