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Question Number 147147 by nadovic last updated on 18/Jul/21
Oneendofaninextensiblestringisfixedtoaceilingandtheotherendistiedtoawoodenblock.TheblockispulledasidebyahorizontalforceP,suchthatthestringnowmakesanangleof45°withthedownwardvertical.WhentheforcePisraisedthroughanangleof30°,itdecreasesby8Ntokeepthesysteminequilibriumwithoutshiftingthestring.Findthe(a)valueofP.(b)massoftheblock.
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