(a) Find the magnitude of the acceleration of the two blocks in FIGURE 6-56 (a). Assume the top block slides without friction on the horizontal surface.
(b) If the 12-N block in Figure 6-56 (a) is replaced with a 12-N force pulling downward, as in FIGURE 6-56 (b), is the acceleration of the sliding block greater than, less than, or equal to the acceleration calculated in part (a)? Explain.
(c) Calculate the acceleration of the block in Figure 6-56 (b), assuming it slides without friction.

Transcribed Image Text:

25 N O 25 N O 12 N (b) 12 N (a)