eraj007 31/03/2022 Explicação:1. Dadosm=50000g=50kgv=10km/h=2,78m/sEc=?Ec=mv²/2Ec=50.(2,78)²/2Ec=25.7,72Ec=169,84J2. Dadosm=4000g=4kgk=100N/m²x=10cm=0,1mv=?EC=Eemv²/2=kx²/24.v²=100.(0,1)²v²=100.0.01/4v²=25.0,01v²=0,25v=√0,25v=0,5m/s3. DadosgT=9,8m/s²gL=1,6m/s²m=50000g=50kgh=2000cm=20mEpL=?EpT=?EpL=m.gL.hEpL=50.1.6.20EpL=1600JEpT=m.gT.hEpT=50.9,8.20EpT=9800J
eraj007
Explicação:
1. Dados
m=50000g=50kg
v=10km/h=2,78m/s
Ec=?
Ec=mv²/2
Ec=50.(2,78)²/2
Ec=25.7,72
Ec=169,84J
2. Dados
m=4000g=4kg
k=100N/m²
x=10cm=0,1m
v=?
EC=Ee
mv²/2=kx²/2
4.v²=100.(0,1)²
v²=100.0.01/4
v²=25.0,01
v²=0,25
v=√0,25
v=0,5m/s
3. Dados
gT=9,8m/s²
gL=1,6m/s²
m=50000g=50kg
h=2000cm=20m
EpL=?
EpT=?
EpL=m.gL.h
EpL=50.1.6.20
EpL=1600J
EpT=m.gT.h
EpT=50.9,8.20
EpT=9800J