Mary and chuck each pull at opposite ends of a rope. chuck is stronger. who will move backwards?

question 16 options:

the rope will move but mary and chuck won’t

both mary and chuck will move forward

chuck will move backwards

mary will move backwards

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.