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| Q. |
What are the units of torsional rigidity? |
| A. | nmm2 |
| B. | n/mm |
| C. | n-mm |
| D. | n |
| Answer» A. nmm2 | |
| Explanation: the product of modulus of rigidity (c) and polar moment of inertia (j) is called torsional rigidity. torsional rigidity is a torque that produces a twist of one radian in a shaft of unit length. | |
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