Recent content by oscar_lai_hk

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    Optimal Wire Shape for Constant Horizontal Speed | Bead under Gravity

    I try to solve this problem of conservation energy.but why the answer not include y = 0?
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    Maximizing Projectile Motion: Finding the Optimal String Cut Location

    I can write the equation towards the center : T + mg cos0 = mv^2/R and I consider the energy at the moment of escape and the highest position I get the equation (0.5)mv^2 = (0.5)m(vcos0)^2 + mgy then I try to diff. the above equation of y respect to the angle 0 it is right?
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    Maximizing Projectile Motion: Finding the Optimal String Cut Location

    A mass is attached to one end of the massless string, the other and of which is attached to a foxed support. The mass swings around in a vertical circle as shown in Fig 5.36. Assuming that the mass has the minimum speed necessary at the top of the circle to keep the string from going slack, at...
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    Optimal Wire Shape for Constant Horizontal Speed | Bead under Gravity

    A bead, under the influence of gravity, slides along a frictionless wire whose height is given by the function y(x), Assume that at position 9x,y) = (0,0), the wire is horizontal and the bead passes this point with a given speed v to the right. What should the shape of the wire be(that is, what...
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    Optimizing Projectile Motion: Finding the Maximum Height in a Vertical Circle

    A mass is attached to one end of the massless string, the other and of which is attached to a foxed support. The mass swings around in a vertical circle as shown in Fig 5.36. Assuming that the mass has the minimum speed necessary at the top of the circle to keep the string from going slack, at...
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    Optimizing Projectile Motion: Finding the Maximum Height in a Vertical Circle

    A mass is attached to one end of the massless string, the other and of which is attached to a foxed support. The mass swings around in a vertical circle as shown in Fig 5.36. Assuming that the mass has the minimum speed necessary at the top of the circle to keep the string from going slack, at...
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    Understanding Orbital Period: Definition, Factors, and Calculation

    What is orbital period?
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    What is the Astronomical Definition of Eccentricity?

    What is eccentricity?
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    What keeps the atmosphere of a planet in place?

    What keeps the atmosphere of a planet in place? THZ
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