Determining the frictional resistance.

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To determine the frictional resistance between an inclined plane and a cart, calculate the applied force needed to drag the cart along the plane while considering the mass, vertical height, and displacement. If the cart is pulled at a constant velocity, the net force acting on it is zero, indicating that the applied force equals the sum of gravitational and frictional forces. The work input can be calculated using the formula Fd, while the work output is given by mgh. By comparing these values, the frictional resistance can be derived. Understanding these principles allows for accurate calculations of frictional forces in practical applications.
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How would you determine the frictional resistance between an inclined plane and cart (with wheels) when you are pulling the cart with a spring scale along the plane when you know:
mass of cart, vertical height of plane , displacement (hypotenuse of inclined plane), applied force needed to drag the cart on inclined plane, work input: Fd and work output: mgh?
 
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lauralovesyou said:
How would you determine the frictional resistance between an inclined plane and cart (with wheels) when you are pulling the cart with a spring scale along the plane when you know:
mass of cart, vertical height of plane , displacement (hypotenuse of inclined plane), applied force needed to drag the cart on inclined plane, work input: Fd and work output: mgh?

Is the cart pulled at a constant velocity? probably so...

Do you know how to find the force required to pull the cart at a constant velocity if the plane was frictionless? Not an experiment, just done on paper?
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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