What is the gravitational torque on the beam about an axis throughthe hinged end

Question

What is the gravitational torque on the beam about an axis throughthe hinged end when the beam is at the upper position? Express your answer using two significant figures. What is the gravitational torque on the beam about an axis throughthe hinged end when the beam is at the middle position? Express your answer using two significant figures. What is the gravitational torque on the beam about an axis throughthe hinged end when the beam is at the lower position? Express your answer using two significant figures. What is the gravitational torque on the beam about an axis throughthe hinged end when the beam is at the upper position? Express your answer using two significant figures. What is the gravitational torque on the beam about an axis throughthe hinged end when the beam is at the middle position? Express your answer using two significant figures. What is the gravitational torque on the beam about an axis throughthe hinged end when the beam is at the lower position? Express your answer using two significant figures. What is the gravitational torque on the beam about an axis throughthe hinged end when the beam is at the middle position? Express your answer using two significant figures. What is the gravitational torque on the beam about an axis throughthe hinged end when the beam is at the lower position? Express your answer using two significant figures. What is the gravitational torque on the beam about an axis throughthe hinged end when the beam is at the lower position? Express your answer using two significant figures.

Explanation / Answer

L = 2.0 m, m = 15 kg, = 20o, =45o at the upper position the gravitational torque on the beam =mgcos*(L/2) = 138 Nm at the middle position the gravitational torque on the beam =mg*(L/2) = 147 Nm at the lower position the gravitational torque on the beam =mgcos*(L/2) = 104 Nm

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