Afarmhand attaches a 25-kg bale of hay to one end of a rope passing over a
frictionless pulley connected to a beam in the hay barn. another farmhand then
pulls down on the opposite end of the rope with a force of 277 n. ignoring the
mass of the rope, what will be the magnitude and direction of the bale's
acceleration if the gravitational force acting on it is 245 n?

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.