Question Number 24739 by Tinkutara last updated on 25/Nov/17

Commented by Tinkutara last updated on 25/Nov/17

Commented by ajfour last updated on 25/Nov/17

Commented by Tinkutara last updated on 25/Nov/17

Commented by ajfour last updated on 25/Nov/17

Commented by ajfour last updated on 25/Nov/17
![(1/2)m(u^2 −v^2 )=mgy=mgL(1+sin θ) ....(i) ((mv^2 )/L)=mgsin θ ⇒ v^2 =gLsin θ ..(ii) x=(R/2)=((v^2 sin [2(90−θ)])/(2g))=Lcos θ−(L/8) ⇒gLsin θ×((2sin θcos θ)/(2g))=L(cos θ−(1/8)) ⇒ cos θ(1−cos^2 θ)=cos θ−(1/8) or cos θ=(1/2) Now from (i): v^2 =(((√3)gL)/2) using this in (i): u^2 =v^2 +2gL(1+sin θ) =(((√3)gL)/2)+2gL(1+((√3)/2)) or u= (√(((3(√3)+4)gL)/2)) .](https://www.tinkutara.com/question/Q24757.png)
Commented by Tinkutara last updated on 25/Nov/17
![x=(R/2)=((v^2 sin [2(90−θ)])/(2g))=Lcos θ−(L/8) How this L(cos θ−(1/8))?](https://www.tinkutara.com/question/Q24768.png)
Commented by ajfour last updated on 25/Nov/17

Commented by Tinkutara last updated on 26/Nov/17

Commented by ajfour last updated on 27/Nov/17

Commented by ajfour last updated on 28/Nov/17

Commented by mrW1 last updated on 28/Nov/17

Commented by mrW1 last updated on 28/Nov/17
