Physics  please help!!..
posted by Molly .
A long thin rod lies along the xaxis from the origin to x=L, with L= 0.890 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x2). The value of λ0 is 0.700 kg/m and x is in meters.
1. Calculate the total mass of the rod.
2. Calculate the xcoordinate of the center of mass of the rod.
3. Calculate the moment of inertia of the rod with respect to the yaxis.
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