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When an archer pulls an arrow back in his bow, he is storing potential energy in the stretched bow.
(a) Compute the potential energy stored in the bow, if the arrow of mass 4.50 x 10^-2 kg leaves the bow with a speed of 39.0 m/s. Assume that mechanical energy is conserved.
(b) What average force must the archer exert in stretching the bow if he pulls the string back a distance of 30.0 cm?
Find out the rotational inertia of this object (a) about an axis through the center of the triangle and perpendicular to its plane (b) and about an axis that passes through one vertex and the midpoint of the opposite side.
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