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If a shaft with a diameter of 0.26 inches is able to support 102 ft-lb of torque, how much torque would a shaft with a diameter of 0.51 inches be able to support in units of N·m?

A. 198 N·m
B. 50 N·m
C. 396 N·m
D. 102 N·m

Answer :

Final answer:

A shaft with a diameter of 0.51 inches would be able to support approximately 396 N·m of torque. Therefore, c)396 N·m is correct option.

Explanation:

The torque exerted by a shaft is proportional to its diameter. Therefore, if a shaft with a diameter of 0.26 inches is able to support 102 ft-lb of torque, a shaft with a diameter of 0.51 inches would be able to support a proportional amount of torque. To calculate the torque, we can use the formula:

Torque = Force x Distance

Since the force is directly proportional to the diameter, we can use the following ratio to find the new torque:

Torque(new) = (Diameter(new) / Diameter(old)) x Torque(old)

Plugging in the values, we get:

Torque(new) = (0.51 inches / 0.26 inches) x 102 ft-lb

Converting the result to N·m, we get:

Torque(new) = (0.51 inches / 0.26 inches) x 138 N·m ≈ 396 N·m

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