A wind turbine farm can be used to generate significant amounts of electricity.

Question

A wind turbine farm can be used to generate significant amounts of electricity. As you pass the wind turbine farm on a windy day you notice that the three-bladed propellers are all rotating clockwise at a constant speed From this observation you conclude

that the wind is exerting zero torque on the turbine blades, while the NET torque on the turbine blades is clockwise.

that the wind is exerting zero torque on the turbine blades, while the NET torque on the turbine blades is also zero.

that the wind is exerting a clockwise torque on the turbine blades, and the NET torque on the turbine blades is clockwise.

that the wind is exerting a clockwise torque on the turbine blades, and the NET torque on the turbine blades is zero.

that the wind is exerting zero torque on the turbine blades, while the NET torque on the turbine blades is clockwise.

that the wind is exerting zero torque on the turbine blades, while the NET torque on the turbine blades is also zero.

that the wind is exerting a clockwise torque on the turbine blades, and the NET torque on the turbine blades is clockwise.

that the wind is exerting a clockwise torque on the turbine blades, and the NET torque on the turbine blades is zero.

Explanation / Answer

using newton's law, Net torque = I x alpha

as turbine is moving with constant speed, that means alpha is zero.

so NEt torque on turbine is zero.

net torque is sum of torque due to wind and torque due to axle et.c (that will be opposite of wind)

as it started rotating that menas wind act torque in clockwise direction.

the wind is exerting a clockwise torque on the turbine blades, and the NET torque on the turbine blades is zero

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