Suppose you drop your pencil on the floor while working at a desk on your problem set. roughly estimate the change in entropy of the universe well after the pencil comes to rest. note: an approximate, order-of-magnitude numerical estimate is what we are looking for here. but briefly specify and justify any major approximations or assumptions you make.

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.