Two rods of lengths L and L (where L < L) are attached at one end...

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Two rods of lengths L₁ and L₂ (where L₂ < L₁) are attached at one end with a pivot. L₂ has its other end fixed to the ground and is always held vertical. L₁ has its other end resting on the ground, but is not fixed. The angle between the two is Φ. A LI al L2 α2 The two rods have coefficients of linear expansion α₁ and a₂ respectively. Both have their temperature changed by the same amount AT. If the initial angle before the temperature change ;=20.5°, and the coefficients are a₁=5.0×10-5 and a2=3.0x10-5, what is the change in angle between the two rods after the change in temperature of 8.8K? Answer in arcseconds. Note that 3600 arcseconds = 1 degree. Two rods of lengths L₁ and L₂ (where L₂ < L₁) are attached at one end with a pivot. L₂ has its other end fixed to the ground and is always held vertical. L₁ has its other end resting on the ground, but is not fixed. The angle between the two is Φ. A LI al L2 α2 The two rods have coefficients of linear expansion α₁ and a₂ respectively. Both have their temperature changed by the same amount AT. If the initial angle before the temperature change ;=20.5°, and the coefficients are a₁=5.0×10-5 and a2=3.0x10-5, what is the change in angle between the two rods after the change in temperature of 8.8K? Answer in arcseconds. Note that 3600 arcseconds = 1 degree.