Recent content by bkercso

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    Undergrad Gravitational potential gradient in accelerated reference frames?

    Hi, Could you please help me to clarify the following problem? In the gravitational field of a mass, the force on a body in steady state comes from the gradient of the gravitational potential - or the gradient of speed of time. But what about accelerated reference frames? I assume that there is...
    • bkercso
    • Thread
    • Frames Gradient Gravitational Gravitational acceleration Gravitational potential Potential Reference Reference frames
    • Replies: 1
    • Forum: Special and General Relativity
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    High School What is the equivalent in kg of the force exerted on a plate

    I think one can easily push down the knife with 5-10 "kg" (50-100 N), when its necessary.
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    Undergrad How dynamic and static pressures are related

    "As dynamic increases the static pressure decreases. But why?" When applying impact pressure to a fluid or gas, it is accelerated, after that its pressure decrases because of energy conservation (Bernoulli law). Static pressure is the pressure you could feel inside this fluid or gas. Dynamic...