To understand how the conservation of energy and Newton's second law can be combined to solve kinetic problems. As shown, a large globe has a radius R
and a frictionless surface. A small block with mass m starts sliding from rest at the top of the globe and slides along the globe’s surface. The block leaves the globe’s surface when it reaches a height hl above the ground. The system’s geometry is shown for an arbitrary height h. (Figure 1) Note that the subscripts used in this problem is the letter l
and not the number 1.
Consider what happens when the block leaves the globe’s surface. Which of the following statement or statements are correct?
- The net acceleration of the block is directed straight down.
- The component of the force of gravity toward the globe’s center is equal to the normal force’s magnitude.
- The force of gravity is the only force acting on the block.Consider what happens when the block leaves the globe’s surface. Which of the following statement or statements are correct?
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a only |
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b only |
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c only |
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a and b |
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a and c |
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b and c |
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a, b, and c |
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