भूगोल परिचय और खगोल विध्या मुफ्त हिंदी पीडीऍफ़ पुस्तक | Bhugol Parichay Aur Khagol Vidhya Hindi Book Free Download

Pustak Ka Vivaran : Yadi Ek Aisa chhota sa hindola bananv ki uske khasme ek Patari me jude hon aur ghanno see usame tiki ho, jhab hindole ki Rasali ke peg de den to bah barabar hilati rahegi aur yadi pro ko chalane lagen ya usko disha badal bho den so bhi rali patari ki usi disha par jyoko tyon ghooma karegi…….

Description about eBook : If such a small carousel is made that its ends are connected in a track and it is tightly fixed in it, then if you give the peg of the rope of the carousel, it will move continuously and if the pro starts running or changes its’ direction, even then The rope will rotate on the same direction of the track as it is…….

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