Completo te folowing problems from HERN Abonus of 15% wll beghen on problems has

Question

Completo te folowing problems from HERN Abonus of 15% wll beghen on problems has wo estlycorplendmmtun 24 hon bel-te assigned due daesime. Assignment Scering hrabbninswedbryo, ser The figure below shows particles 1 and 2, each of mass m, attached to the ends of a rigid massless rod of length + with 14 and ig defined as shown The rod is held horirontaly an he ucrum and then relessed. What are the magnitudes of the initial acceleration of particle 1 and partidle 27 (Use any variable or symbol stated abeove along with the folowing as necessary g for tre Additional Materials 10 sa m each are placed at the vertices of a square with side length a and held by four massless rods, wnich form the Four identical particles of m above as necessary, of the square? (a) What is the rotational inertia of this rigid body about an axis passes through the midpomt of opposite sides and les in the plane (b) What is the rotational inertia of this rigid body about an axis that passes through the midpoint of one of the sides and rpenular to the plane of the sar

Explanation / Answer

1. net torque = I alpha

m L2 g - m L1 g = (m L2^2 + m L1^2) (alpha)

alpha = (L2 - L1)g / (L2^2 + L1^2)

a1 = alpha L1

a1 = (L2 - L1)L1 g / (L2^2 + L1^2) .....Ans

q2 = alpha L2

a2 = (L2 - L1)L2 g / (L2^2 + L1^2) .....Ans

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