3) A torsion spring is used in a hand-held spring clamp. The jaws of the clamp...

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Mechanical Engineering

3) A torsion spring is used in a hand-held spring clamp. Thejaws of the clamp are 1.5 inches from the pivot. The spring angleis 45° when the clamp is closed and 0° when the clamp is open.Determine torsional spring constant, clamping force when closed andclamping force when open. Use units of torque/rev for torsionalspring constant. Include leg length in Na calculations.

d = 0.078 in OD = 0.396 in Nb = 3.25 θfree = 90° music wire legsL1 = L2 = 1.5 in

kθ _____________ Fclosed _____________ Fopen _____________

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