Question

Va rog ajutați.ma ,macar 2 probleme să rezolvați!! îmi trebuie Urgent! Dau coroana

Answer 1

19
G=m·g⇒G=200·10⇒G=2000N
L=F·d⇒G=F⇒d=h=6m=0.006km⇒L=2000·0,006⇒L=12J
20
L=F·d
h=d=0,5m=0,0005km
G=m·g⇒G=50·10=500N
G=F⇒L=500·0,0005⇒L=0,25J

21
L=F·d⇒d=L/F
G=400N
L=1,6kJ=1600J
d=1600/400
d=4km
d=h⇒h=4km
22
h=8m=0,008km
L=4kJ=4000J
L=F·d⇒F=4000/0,008⇒F=500000N
G=m·g⇒m=500000:10⇒m=50000kg