On a stationary sail boat, air is blown from a fan attached to the boat. The boat
A. moves in opposite direction in which the air is blown
B. does not move
C. moves in the same direction in which air blows
D. spins around
Answer: Option B
Solution(By Examveda Team)
In this case air blown by the fan will try to push the sail boat in a certain direction. But at the same time due to Newton's third law of motion the fan will experience a force due to the air blown in a direction opposite to the direction in which the sail boat will experience the force due to the blown air. So, as a whole the system will be at rest and it will not move.This Question Belongs to General Knowledge >> Physics
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Comments ( 6 )
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C. Refractive index
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Radiocarbon is produced in the atmosphere as a result of
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A. Work done in rolling is more than in lifting.
B. Work done in lifting the stone is equal to rolling it.
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The absorption of ink by blotting paper involves:
A. Viscosity of ink
B. Capillary action phenomenon
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What about hover craft? Fan attached behind it
is b correct
Yes optionB is correct because motion is not produced by the body when force exerted by it but motion is produced when force is experienced by the body
ya,,,,i think B is not correct
I don't think B is right answer because even airplanes move by pushing air from front to back using a turbine. Velocity of air is increased by turbine. Likewise air velocity can be increased by a fan in boat too. The force produced by fan should be more than drag caused by boat and water.
Is b a right answer?