mechanická práca, energia, výkon Flashcards by radko púček | Brainscape

Q

Mechanická práca

A

W = Joule (J)

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Q

Mechanická energia

A

potenciálna energia + kinetická energia

(delta)E = W

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Q

kinetická energia

A

energia telesa pri rýchlosti v

Ek = 1/2m*v(na2)

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Q

tiažová potenciálna energia

A

majú telesá vo výške h

Ep = mgh

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Q

potenciálna energia pružnosti

A

pri pružina natiahnutej alebo stlačenej o dĺžku l

Ep = 1/2kl(na2)

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Q

Priemerný výkon

A

Pp = W/t

prácu stroja za čas

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Q

Príkon

A

P0 = (delta)E/(delta)t

podiel energie ktorý bol stroju dodaný za čas

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Q

účinnosť

A

n = P/P0

udávame ju v perentách

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