Class IX er physics mone pore??..Newton's 2nd law??..P=mf..
Jodi, prithibir vor m1 aar onyokichur vor m2 hoy...taahole m1*f=m2*g.
Jokhon, m2>m1 tokhon f>g!...Bolaar uddeshyo holo...
Prithibir theke o beshi vaari kono dukkho niye,
Onek uchu theke jhaap dile...Keu aar maati te pore na....
Maati e uthe aase taar khub kaache!...
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