A block of mass mi is on an inclined plane (angle θ above the horizontal) and is connected by a massless string going over a pulley to a hanging block of mass m2. (The pulley is at the top of the ramp.) Both blocks are held firmly in place (i. e the blocks are at rest). If the blocks are released from rest, determine the acceleration of the blocks if the coefficients of static and kinetic friction between the block 1 and the surface of the incline are μs and μk, respectively. If the problem has multiple answers, explore at least 2 of them.

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.