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The 2-kg block is released from rest at A and slides down along the cylindrical surface. If the attached spring has a stiffness k = 20 N/m, determine its unstretched length so that it does not allow the block to leave the surface until θ = 70∘. Assume friction is μk = 0.1.

The 2-kg block is released from rest at A and slides down along the cylindrical surface. If the attached spring has a stiffness k = 20 N/m, determine its unstretched length so that it does not allow the block to leave the surface until θ = 70∘. Assume friction is μk = 0.1.

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The 2-kg block is released from rest at A and slides down along the cylindrical surface. If the attached spring has a stiffness k = 20 N / m , determine its unstretched length so that it does not allow the block to leave the surface until θ = 70 ∘ . Assume friction is μ k = 0.1 .

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