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 Answer: Option D
Explanation
E x 3 = 80 x 0.5
E3 = 40
E = (frac{40}{3} = 13.3N)