Which of the following correctly states the condition for a beam balance to be in…
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Which of the following correctly states the condition for a beam balance to be in equilibrium?
(a) The algebraic sum of vertical forces acting on the beam is zero.
(b) The ratio of the masses in the two pans equals the ratio of the corresponding arm lengths.
(c) The algebraic sum of moments of all forces about the fulcrum is zero.
(d) The beam is horizontal, irrespective of the distribution of masses.