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3 years ago

A 20 cm

Physics

1 answer:

dem82 [27]3 years ago

5 0

Answer:

$Ebp=9J$

Explanation:

Potential energy:

$Ep=mgh$

m - mass

h - altitude = 20cm = 0.2 m

$Epa=12=0.2(mg)$

Thus:

$mg=\frac{12}{0.2}$

$mg=60n$

In Point B:

$Epb=mg(0.15)$

$Epb=60(0.15)$

$Epb=9J$

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