a beam PQ pivoted at P carries a load of 80N as... - WAEC Physics 2001 Question
a beam PQ pivoted at P carries a load of 80N as shown above. Calculate the effort E, required to keep it horizontal. [neglect the weight of the beam]
A
32.0N
B
26.7N
C
16.0N
D
13.3N
correct option: d
E x 3 = 80 x 0.5
E3 = 40
E = (\frac{40}{3} = 13.3N)
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