General Knowledge - Physics - Discussion
Discussion Forum : Physics - Section 1 (Q.No. 57)
57.
On a stationary sail boat, air is blown from a fan attached to the boat. The boat
Discussion:
59 comments Page 3 of 6.
Teena said:
9 years ago
It is mentioned that fan is attached to the boat. Not that it is on the boat.
The boat will definitely move in the opposite direction as per as Newton's THIRD law of motion.
The boat will definitely move in the opposite direction as per as Newton's THIRD law of motion.
Tarun said:
9 years ago
The boat can move in the opposite direction of the fan. As there is not a description of the size of the fan. That's why the answer is correct, otherwise, AIRBOATs are there.
Shreyas shrihari taklikar said:
9 years ago
Boat will not move because external force is nedded to move boat and fan is blowing air which is internal force. So their must be an external for producing movement of boat.
Law of Energy said:
10 years ago
Dear friends, if the fan is operated through electricity, then that extra electric energy must show some effect when it becomes mechanical! by law of conservation of energy.
Prakash said:
1 decade ago
All dear buddies the boat does not move because the air is blown from the Fan not to the Fan So it doesn't receive any thrust or force hence it does not move.
Archit singhal said:
1 decade ago
I can't understand the reason of no moving. Because hovercraft is a device which has a fan mounted on it and it can move in every surface. So why is it not?
SURENDER SINGH said:
9 years ago
Boat will move in the opposite to the direction of air is blowing because the mass of air is being a drag by a fan and at air will give thrust to the boat.
Rks said:
1 decade ago
The correct question should be on a stationary sail boat, air is blown (at the sail) from a fan attached to the boat. The boat they miss the main detail.
Sid said:
1 decade ago
The weight of the boat is not mentioned. In a water surface the friction is approximately zero. So according to newton's 3rd law the boat must move.
Prasanth said:
1 decade ago
A sailboat is a boat propelled partly or entirely by sails. The sail neutralizes the thrust produced by FAN so the boat won't move.
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