Når Anders lyfter med kraften 40 N längst ut på
en jämntjock planka är den i jämvikt.
Plan...
Physics, 12.05.2020 11:57 lolabizzer
Når Anders lyfter med kraften 40 N längst ut på
en jämntjock planka är den i jämvikt.
Plankan är 4 m lang
Du ska nu ta reda på hur mycket plankan väger.
Sätt ut avståndet från vridningspunkten (vid bocken) till krafterna.
Hur lång är hävarmen för kraften som vrider uppåt?
Hur stort är vridmomentet som vrider uppåt?
Hur stort är vridmomentet som vrider nedåt?
Hur lång är hävarmen till kraften som vrider nedåt?
Hur mycket väger plankan?
Hur stor är kraften som vrider nedåt?
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Answers: 1
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