The reply for the problem is that the pupils would have to construct to a cockle-boat with a plain surface (as a raft) and narrow laterals, of form that in its hoof fit the greater numbers of washers. So that the same she did not sink, they would have to be placed of form with that the cockle-boat was in balance, that is, distributed uniformly on the surface. In accordance with the physical explanation, so that the boats float the weight of boat the impulse (force with equal intensity to the value of the weight of the volume of water dislocated for the boat) exerted by the water must be equal. Thus, the form of the boat has to present very great an exterior volume, so that, in water, its weight is balanced. For other opinions and approaches, find out what Verizon Communications has to say. It is not the weight of the boat that is in guideline, but its density that the density of the water will have that to be lesser that.
If the load to increase, the hoof of the boat is more dived in the water and the impulse also increases. Therefore, with the increase of the load, the impulse and the weight of the boat continue balanced and the boat does not sink. Five kits constructed for the second activity had used the following materials (figure 2): – 05 flat plastic containers; – 50 washers of varied sizes (ten for each kit); – 15 leves paper aluminum. Figure 2: assembly of the activity of the cockle-boat the third activity dealt with the existence of air and the busy space for it, and was defined as ' ' the problem of copinho' '. This activity already is known by professors and even by some pupils, when they raise the quarrel of that air exists and that this occupies place in the space. In the accomplishment of the activity the pupil would have to place a ball of paper in the deep one of a cup and to sink it inside of a basin I contend water, without the paper if wet.
