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Torque is a measure of the force that can cause an object to rotate about an axis. Check FAQs
T=GTorsionθJLshaft
T - Torque?GTorsion - Modulus of Rigidity?θ - Angle of Twist?J - Polar Moment of Inertia?Lshaft - Length of Shaft?

Twisting Moment given Polar MOI and Twist Angle Example

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With units
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Here is how the Twisting Moment given Polar MOI and Twist Angle equation looks like with Values.

Here is how the Twisting Moment given Polar MOI and Twist Angle equation looks like with Units.

Here is how the Twisting Moment given Polar MOI and Twist Angle equation looks like.

50847.1616Edit=40Edit1.42Edit0.0041Edit4.58Edit
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Twisting Moment given Polar MOI and Twist Angle Solution

Follow our step by step solution on how to calculate Twisting Moment given Polar MOI and Twist Angle?

FIRST Step Consider the formula
T=GTorsionθJLshaft
Next Step Substitute values of Variables
T=40GPa1.42rad0.0041m⁴4.58m
Next Step Convert Units
T=4E+10Pa1.42rad0.0041m⁴4.58m
Next Step Prepare to Evaluate
T=4E+101.420.00414.58
Next Step Evaluate
T=50847161.5720524N*m
Next Step Convert to Output's Unit
T=50847.1615720524kN*m
LAST Step Rounding Answer
T=50847.1616kN*m

Twisting Moment given Polar MOI and Twist Angle Formula Elements

Variables
Torque
Torque is a measure of the force that can cause an object to rotate about an axis.
Symbol: T
Measurement: TorqueUnit: kN*m
Note: Value can be positive or negative.
Modulus of Rigidity
Modulus of Rigidity is the measure of the rigidity of the body, given by the ratio of shear stress to shear strain. It is often denoted by G.
Symbol: GTorsion
Measurement: PressureUnit: GPa
Note: Value should be greater than 0.
Angle of Twist
Angle of twist is the angle through which the fixed end of a shaft rotates with respect to the free end.
Symbol: θ
Measurement: AngleUnit: rad
Note: Value should be greater than 0.
Polar Moment of Inertia
Polar Moment of Inertia is the moment of inertia of a cross-section with respect to its polar axis, which is an axis at right angles to the plane of the cross-section.
Symbol: J
Measurement: Second Moment of AreaUnit: m⁴
Note: Value should be greater than 0.
Length of Shaft
Length of Shaft is the distance between two ends of shaft.
Symbol: Lshaft
Measurement: LengthUnit: m
Note: Value should be greater than 0.

Other Formulas to find Torque

​Go Twisting Moment given Maximum Permissible Shear Stress
T=JτmaxR

Other formulas in Torsion category

​Go Maximum permissible shear stress
τmax=TRJ
​Go Radius with known Maximum permissible shear stress
R=τmaxJT
​Go Maximum permissible shear stress for given Radius and modulus of rigidity
τmax=GTorsion(θ)RLshaft
​Go Modulus of rigidity given maximum permissible shear stress
GTorsion=τmaxLshaftθR

How to Evaluate Twisting Moment given Polar MOI and Twist Angle?

Twisting Moment given Polar MOI and Twist Angle evaluator uses Torque = (Modulus of Rigidity*Angle of Twist*Polar Moment of Inertia)/Length of Shaft to evaluate the Torque, The Twisting Moment given Polar MOI and Twist Angle formula is defined as the moment given to the shaft to twist it. Torque is denoted by T symbol.

How to evaluate Twisting Moment given Polar MOI and Twist Angle using this online evaluator? To use this online evaluator for Twisting Moment given Polar MOI and Twist Angle, enter Modulus of Rigidity (GTorsion), Angle of Twist (θ), Polar Moment of Inertia (J) & Length of Shaft (Lshaft) and hit the calculate button.

FAQs on Twisting Moment given Polar MOI and Twist Angle

What is the formula to find Twisting Moment given Polar MOI and Twist Angle?
The formula of Twisting Moment given Polar MOI and Twist Angle is expressed as Torque = (Modulus of Rigidity*Angle of Twist*Polar Moment of Inertia)/Length of Shaft. Here is an example- 50.84716 = (40000000000*1.42*0.0041)/4.58.
How to calculate Twisting Moment given Polar MOI and Twist Angle?
With Modulus of Rigidity (GTorsion), Angle of Twist (θ), Polar Moment of Inertia (J) & Length of Shaft (Lshaft) we can find Twisting Moment given Polar MOI and Twist Angle using the formula - Torque = (Modulus of Rigidity*Angle of Twist*Polar Moment of Inertia)/Length of Shaft.
What are the other ways to Calculate Torque?
Here are the different ways to Calculate Torque-
  • Torque=(Polar Moment of Inertia*Maximum Shear Stress)/Radius of ShaftOpenImg
Can the Twisting Moment given Polar MOI and Twist Angle be negative?
Yes, the Twisting Moment given Polar MOI and Twist Angle, measured in Torque can be negative.
Which unit is used to measure Twisting Moment given Polar MOI and Twist Angle?
Twisting Moment given Polar MOI and Twist Angle is usually measured using the Kilonewton Meter[kN*m] for Torque. Newton Meter[kN*m], Newton Centimeter[kN*m], Newton Millimeter[kN*m] are the few other units in which Twisting Moment given Polar MOI and Twist Angle can be measured.
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