Kamini's storeroom has only one electric bulb and she finds a little dark. She wants to fit an extra bulb. Her husband John suggests that he will instead fit more mirrors on the walls of the storeroom. Will John's idea work?

A Yes, though it will only feel brighter, the room will not actually become brighter.
B Yes, the mirrors will reflect light actually making the room brighter.
C No, without adding a light source, the room cannot be brightened.
D No, due to the reflections of the other objects, the room will become less bright.

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^.