A hoop has mass and radius of 4 kg and 0.37 m, respectively. The hoop start from rest and has a constant angular acceleration with respect to a rotational axis that is perpendicular to the plane of the hoop at its center. The hoop turns through an angle of 16 rad in 6.3 s. Find the net external torque that acts on the hoop.

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answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

hypothesising or postulating