89. The mass of a solid body is 200 gm and oscillates about a horizontal axis at a distance of 20 cmsfrom the centre of gravity. If length equivalent tosimple pendulum is 40 cms, its M.1. thorugh thecentre of gravity will be :(1) 8 x 10* gm-cm(2) 8 x 104 kg-om"(3) 8 x 104 gm-m14) 8 x 104 kg-cm

89. The mass of a solid body is 200 gm and oscillates about a horizo

1.	89. The mass of a solid body is 200 gm and oscillates about a horizontal axis at a distance of 20 cmsfrom the centre of gravity. If length equivalent tosimple pendulum is 40 cms, its M.1. thorugh thecentre of gravity will be :(1) 8 x 10* gm-cm(2) 8 x 104 kg-om"(3) 8 x 104 gm-m14) 8 x 104 kg-cm
Answer» 2π GL =2π mgl ′ I ∴ l= ML ′ I or I=(m)(l)(l ′ ) =(200)(20)(35) =1.4×10 5 g-cm 2

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89. The mass of a solid body is 200 gm and oscillates about a horizontal axis at a distance of 20 cmsfrom the centre of gravity. If length equivalent tosimple pendulum is 40 cms, its M.1. thorugh thecentre of gravity will be :(1) 8 x 10* gm-cm(2) 8 x 104 kg-om"(3) 8 x 104 gm-m14) 8 x 104 kg-cm​

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89. The mass of a solid body is 200 gm and oscillates about a horizontal axis at a distance of 20 cmsfrom the centre of gravity. If length equivalent tosimple pendulum is 40 cms, its M.1. thorugh thecentre of gravity will be :(1) 8 x 10* gm-cm(2) 8 x 104 kg-om"(3) 8 x 104 gm-m14) 8 x 104 kg-cm