EllieSunny123
EllieSunny123 EllieSunny123
  • 16-06-2020
  • Physics
contestada

A 20 cm
B 15 cm
C 10 cm
D 5 cm
E 0 cm
If potential energy at point A is 12 joules, what is the potential energy at B?

Respuesta :

protecter4life
protecter4life protecter4life
  • 16-06-2020

Answer:

[tex]Ebp=9J[/tex]

Explanation:

Potential energy:

[tex]Ep=mgh[/tex]

m - mass

h - altitude = 20cm = 0.2 m

[tex]Epa=12=0.2(mg)[/tex]

Thus:

[tex]mg=\frac{12}{0.2}[/tex]

[tex]mg=60n[/tex]

In Point B:

[tex]Epb=mg(0.15)[/tex]

[tex]Epb=60(0.15)[/tex]

[tex]Epb=9J[/tex]

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