Question

A posição do centro de massa da régua a seguir é:
xg = 3,85 cm e yg = 6,85 cm
xg = 3,85 m e yg = 4,85 cm
xg = 4,85 m e yg = 5,85 cm
xg = 4,85 cm e yg = 4,85 cm
xg = 4,85 cm e yg = 6,85 cm

42c40fde47a0aa7e3b205ff211e7d360.docx

Answer 1

Resposta:

CGx=3,85cm e CGy=6,85cm

Explicação:

Area1 = (4cm . 14cm) =  56cm²

Area2 = (4cm . 12cm) =  48cm²

Total   = 104cm²

x1= (4cm/2) = 2cm

x2= (12cm/2) = 6cm

y1= (14cm/2)+4cm = 11cm

y2= (4cm/2) = 2cm

CGx=(2 . 56) + (6 . 48) / 104

CGx=(112 + 288)/104

CGx=400/104

CGx=3,85cm

CGy=(11 . 56) + ( 2 . 48) / 104

CGy=(616 + 96)/104

CGy=712/104

CGy=6,85cm