contestada

If potential energy at point A is 12 joules, what is the potential energy at D?

P.E. = 2.4
2
3

Respuesta :

Answer:

In D: 3J

Explanation:

Potential energy: Ep=mgh where m is the mass, h altitude.

In point A: h=20cm=0.2m

Epa=12=0.2×mg. Thus mg=12/0.2=60N

For point D: hd=5cm=0.05m

Epd=mg×0.05=60×0.05=3J

Answer:

P.E. = 3J

Explanation:

Hope this helps.

The answer above is correct; it is 3 joules in d.