I'll list the forces, with a short explanation of each - feel free to ask for a more detailed explanation for any.
A: Upthrust, provided by the water - unless the ship is sinking, this will always be equal to the weight of the ship (or moving up and down with waves, but this is insignificant for most purposes).
B: This is the driving force of the motor, provided by the engine or rather the propellor pushing the boat forward.
C: This is the weight of the boat - not the mass, as is it often mistaken for. Weight is the mass multiplied by acceleration due to gravity (g, 9.81m/s^2). You could use Newton's Second Law (F=MA), to give you the value.
D: The resistive force of the water towards the motion of the boat. It will never be larger than B because if there is no motion, there can be no resistance. It doesn't act as a force on it's own - it's only there because of motion.
The larger B is, the faster the boat will move, but the larger D is, the larger B will have to be. That's a bit of a mouthful, haha - you might have to read it once or twice.
From these explanations, you should be able to work out the rest - I recommend you take a moment to try them before having a look at my answers below.
If B is larger than D, this ship will move forward - if they are equal, it will stay still. If C is larger than A, the ship will sink, morbidly enough.
The ship will begin to move forward when forces B and D are unbalanced.
As previously stated, B is the driving force, and D the resisitve - when B is larger than D, the ship accelerates as there is a resultant force in the left-to-right direction.
When the ship is moving at a steady speed, forces B and D are balanced.
No resultant force leads to the same state of motion continuing (see Newton's Laws), so if speed isn't changing, the force from the motor is the same as the resisitive force.
The ship stops at a port. All of the containers are taken off and this changes force C.
Due to F = MA (in this case W = Mg where W = weight and g = acceleration due to gravity, 9.81m/s^2), a decrease in mass from the removal of the containers decreases weight as g is a constant. May have overexplained that for you - less weight from containers, less overall weight, haha.
Let me know if any of this is confusing or not detailed enough.
Hey friend,
I'll list the forces, with a short explanation of each - feel free to ask for a more detailed explanation for any.
A: Upthrust, provided by the water - unless the ship is sinking, this will always be equal to the weight of the ship (or moving up and down with waves, but this is insignificant for most purposes).
B: This is the driving force of the motor, provided by the engine or rather the propellor pushing the boat forward.
C: This is the weight of the boat - not the mass, as is it often mistaken for. Weight is the mass multiplied by acceleration due to gravity (g, 9.81m/s^2). You could use Newton's Second Law (F=MA), to give you the value.
D: The resistive force of the water towards the motion of the boat. It will never be larger than B because if there is no motion, there can be no resistance. It doesn't act as a force on it's own - it's only there because of motion.
The larger B is, the faster the boat will move, but the larger D is, the larger B will have to be. That's a bit of a mouthful, haha - you might have to read it once or twice.
From these explanations, you should be able to work out the rest - I recommend you take a moment to try them before having a look at my answers below.
If B is larger than D, this ship will move forward - if they are equal, it will stay still. If C is larger than A, the ship will sink, morbidly enough.
The ship will begin to move forward when forces B and D are unbalanced.
As previously stated, B is the driving force, and D the resisitve - when B is larger than D, the ship accelerates as there is a resultant force in the left-to-right direction.
When the ship is moving at a steady speed, forces B and D are balanced.
No resultant force leads to the same state of motion continuing (see Newton's Laws), so if speed isn't changing, the force from the motor is the same as the resisitive force.
The ship stops at a port. All of the containers are taken off and this changes force C.
Due to F = MA (in this case W = Mg where W = weight and g = acceleration due to gravity, 9.81m/s^2), a decrease in mass from the removal of the containers decreases weight as g is a constant. May have overexplained that for you - less weight from containers, less overall weight, haha.
Let me know if any of this is confusing or not detailed enough.
Hope I helped!