[UNIDAD 1] Trabajo, Potencia y Energía Flashcards

1
Q

Trabajo ( L ) = ????? (formula)

A

★ Si va paralelo al piso:

L = F . d
(d = distancia)

★ Si va por plano inclinado:

L = F . cos α . d

★ Si va hacia arriba / abajo:

L = Peso . h

L peso = - [ m . g . hf - m . g . hi ]

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2
Q

Trabajo ( L ) = ????? (unidades)

A

★ En sistema MKS:

L = N . m = J

N = Newton | m = metro | J = joules

★ En sistema CGS:

L = din . cm = erg

din = dina | cm = centímetro | erg = ergio

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3
Q

1 Joule ( J ) = ????? (valor ergios)

A

1 J = 107 erg

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4
Q

Potencia ( Pot ) = ????? (formula)

A

ㅤㅤㅤLㅤㅤㅤㅤㅤㅤ(F . d)
Pot = ━━━ㅤㅤPot = ━━━━
ㅤㅤㅤΔtㅤㅤㅤㅤㅤㅤㅤΔt

Pot = F . vㅤㅤㅤPot = F . v . cos α

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5
Q

Potencia ( Pot) = ????? (unidades)

A

Pot = J / s = Watts

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6
Q

1 KiloWatt = ????? (valor)

A

1 KiloWatt = 1000 Watts

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7
Q

1 KiloWatt Hora = ????? (valor)

A

1 KiloWatt Hora = 1000 Watts Por Hora

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8
Q

Energía Potencial Gravitatoria (E pot) = ????? (formula)

A

E pot = m . g . h
E pot = P . h

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9
Q

Energía Potencial Gravitatoria (E pot) = ????? (unidades)

A

E pot = N . m
E pot = Joules

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10
Q

Energía Cinética (E cin) = ????? (formula)

A

E cin = ½ . m . v²

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11
Q

Energía Cinética (E cin) = ????? (unidades)

A

E cin = kg . m/s . m/s [Newton = kg. m/s²]
E cin = N . m = Joules

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12
Q

Unidades: 1 KCal = Joules ????? (valor)

A

1 KCal = 4186 Joules

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13
Q

Energía Mecánica = ????? (formula)

A

E mec = E pot + E cin
E mec = (m . g . h) + (½ . m . v²)

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14
Q

ΔE mec = ????? (formula)

A

ΔE mec = ΣL fuerzas no conservativas
E mec f - E mec i = ΣL fuerzas no conservativas
E cin f + E pot f - E cin i - E pot i = ΣL fuerzas no conservativas

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15
Q

Fuerzas conservativas y E mec = ????? (concepto y formulas)

A

★ Fuerzas NO conservativas → E mec NO se conserva → E mec i =/= E mec f

★ Fuerzas conservativas E mec → SI se conserva → E mec i = E mec f

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