JAMB Physics 1982 Question 29

A uniform beam PQ of mass 20 kg and length 5 m is balanced as shown (Fig. 8). A man of weight 800 N stands at M such that QM = 2 m. The reactions at P and Q respectively are (take g = 10 m s⁻²).

1. A.300 N and 500 N
2. B.420 N and 580 N
3. C.220 N and 380 N
4. D.580 N and 420 N
5. E.380 N and 220 N