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ACTIVITY Do you know where is located the center of gravity? There is a mathematical formula that says that the center of gravity of a person in estimation and in cm, is calculated from the plantar region (from the feet). The formula is: = CG (0.557 x height) + 1.4 cm With colleagues and under the guidance of the teacher, find the location of its center of gravity. The issue that brought us to study the CG of the body is our initial problem, ie, finding the boat is lost at sea. GC pull it in the human body, connecting the center of gravity of a triangle inscribed in a circle in figure 5. Now, let us return to our problem and try to solve it. Here is a suggestion to resolve the challenge. If you have other solutions, with different uses of mathematical knowledge or other knowledge, present them to the class. A point B 1 on a sheet of paper, the boat is adrift. 2nd Another point would be A. At that point, the plane's radio picks up first the radio signal emitted by the boat. 3 is traced in the center of the circle containing B and point A. 4 Next, place the aiming point (B) where part of the signal, the plane begins to fly over the area in a circular motion. In the process, he loses the signal sent by boat. has been, in that instant, point C. 5 In the instant it is restored to capture the signal from boat to plane, means that the position of the plane is from the boat equal distance between points A and B. 6 Given the technical requirements and minimum time, draws up the rope that joins A and C, points belonging to the circle. 6 Using mathematical knowledge, built the bisector, through B and the midpoint of AC. 7 It is clear that the plane should follow the bisector toward the center Following in the opposite direction to the center, you lose the signal, it is necessary to restart the process.
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AKTIVNOST Znate li gdje se nalazi težište? Tu je matematička formula koja kaže da je težište osobu u procjeni iu cm, izračunava se iz tabani regije (od stopala). Formula je: = CG (0,557 x visina) + 1,4 cm S kolegama i pod vodstvom učitelja, naći mjesto svog težišta. Pitanje koje nam je donio na studij CG tijela je naš početni problem, odnosno, pronalaženje Brod je izgubio na moru. GC ga povući u ljudskom tijelu, povezuje težište trokuta upisana u krug na slici 5. Sad, vratimo se našoj problem i pokušati ga riješiti. Ovdje je prijedlog za rješavanje izazova. Ako imate drugih rješenja, s različitih namjena matematičkih znanja ili drugih znanja, predstaviti ih na klasu. Točka B 1 na list papira, brod je prepušten slučaju. Još jedna točka će biti A. U tom trenutku, avion je radio pokupi prvi je radio signal emitira na brodu. 3 se pratiti u središtu kruga koji sadrži B i točku A. Dalje, mjesto s ciljem točka (B) gdje je dio signala, avion počinje nadlijeću područje u kružnim pokretima. U tom procesu, on gubi signal poslan brodom. je, u tom trenutku, točka C. U trenu je vraćena na hvatanje signala od broda na ravnini, znači da položaj u ravnini je s broda jednakoj udaljenosti između točaka A i B. S obzirom na tehničke zahtjeve i minimalno vrijeme, izrađuje uže koje spaja A i C, ističe pripadnost krugu. Korištenje matematičkog znanja, izgradio simetralu, kroz B i duzine AC. Jasno je da je zrakoplov trebao slijediti simetrale prema središtu Nakon u suprotnom smjeru prema centru, izgubit signal, potrebno je ponovno pokrenuti proces.