This product uses TMDB and the TMDB APIs but is not endorsed, certified, or otherwise approved by TMDB.
This product uses TMDB and the TMDB APIs but is not endorsed, certified, or otherwise approved by TMDB.
Jack and Jill went up the hill and found a problem: how can they pull a pail of water from the bottom of a well? In this expanded nursery story, we find there is more to a pulley–and its mechanical advantage–than meets the eye.
