Statics 8.8: Additional Problem 1


A 1.5-kg block receives a  push and in the process pushes against a 4.5-kg block as shown in animation 1: Start Animation 1 (position is in meters and time is in seconds). Conversely, in animation 2, the same 4.5-kg block receives the same push, now from the opposite direction and in the process pushes against the 1.5-kg block as shown: Start Animation 2


Determine the force of the large block on the small block in both cases. Do you expect both forces to have the  same magnitude?


-12 N / -3.9 N.


See Giancoli-PA: 9-2, Giancoli-SE: 12-2.


Physlet problem authored by Mario Belloni.

2000 by Prentice-Hall, Inc. A Pearson Company