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WAEC - Physics (2001 - No. 15)

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]
32.0N
26.7N
16.0N
13.3N

설명

E x 3 = 80 x 0.5

E3 = 40

E = \(\frac{40}{3} = 13.3N\)

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