Two identical cylinders, C1 and C2, each of radius (r) and weight (P), are tied

Question

Two identical cylinders, C1 and C2, each of radius (r) and weight (P), are tied together by a cord.  They support a third cylinder C3 or radius (R) and weight (Q).  There is no friction, and the the tension in the cord is just sufficient to make the contact force between C1 and C2 equal zero.  Find:

A.  The tension in the cord.

B.  The force exerted by the ground on C1.

C.  The normal force between C1 and C3.

Two identical cylinders, C1 and C2, each of radius (r) and weight (P), are tied together by a cord. They support a third cylinder C3 or radius (R) and weight (Q). There is no friction, and the the tension in the cord is just sufficient to make the contact force between C1 and C2 equal zero. Find: The tension in the cord. The force exerted by the ground on C1. The normal force between C1 and C3.

Explanation / Answer

Let T be the tension in cord

F1 be the force exerted by ground on C1

N be the normal force between C1 and C3

Equilibrium requires:

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