Consider the object subject to the two forces of equal magnitude in the figure below. Choose the correct statement with regard to this situation.

a) The object is in torque equilibrium but not force equilibrium.
b) The object is in neither force equilibrium nor torque equilibrium.
C) The object is in force equilibrium but not torque equilibrium.
d) The object is in both force equilibrium and torque equilibrium.

Consider a u-tube whose arms are open to the atmosphere. now equal volumes of water and light oil (ρ = 49.3 lbm/ft3) are poured from different arms. a person blows from the oil side of the u-tube until the contact surface of the two fluids moves to the bottom of the u-tube, and therefore, the liquid levels in the two arms are the same. if the fluid height in each arm is 30 in, determine the gage pressure exerted by the person on the oil by blowing.