# An object with a mass of # 2 kg# is traveling in a circular path of a radius of #7 m#. If the object's angular velocity changes from # 7 Hz# to # 9 Hz# in # 3 s#, what torque was applied to the object?

410.7 Nm

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Torque = Moment of Inertia × Angular Acceleration Moment of Inertia (I) for a point mass rotating at a radius (r) = m × r^2 Angular Acceleration (α) = (Final Angular Velocity - Initial Angular Velocity) / Time

Calculate I, then α, and use the torque formula.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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