I believe the answer is e correct me if I’m wrong
Answer:
3.8 kg
Explanation:
The torque, <em>τ</em>, due to the force, <em>F</em>, is given by

where <em>r</em> is the radius.
This torque is also given by

where <em>I</em> and <em>α</em> are respectively the moment of inertia and the angular acceleration.
For a solid disk, its moment of inertia for an axis though its centre and perpendicular to its face is given by

where <em>m</em> is its mass and <em>r</em> is its radius.
Hence, we have


constant non zero acceleration
<span>Sound travels fastest through solids, slower through liquids and slowest through gases.
Answer: Cast Iron, D.
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