A Uniform beam PQ of mass 20kg and length 5m is balanced as shown above, a man of weight 800N stands at M such that QM = 2m. The reaction at P and Q respectively are(take g = 10ms-2)
A.
300N and 500N
B.
420N and 580N
C.
220N and 380N
D.
580N and 420N
E.
382N and 220N
Correct answer is B
No explanation has been provided for this answer.