7 The diagram shows a beam lying on the ground. End Q is lifted from the ground by the force F.
End P of the beam remains on the ground.
The length of the beam is 3.0m and its weight is 600 N.
The centre of mass of the beam at G is 1.0 m from end P.
What is the size of the force F when it just raises end Q from the ground?
A 200 N
B 300 N
C 400 N
D 600N
With solution.
