Recent content by Apprentice123

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    What Is the Pressure Difference When Wind Speed Is 6 m/s?

    My attempt: Bernoulli: Z1 + P1/y + V1^2/2g = Z2 + P2/y + V2^2/2g I have: V1 and V2. But I do not have Z1 and Z2
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    What Is the Pressure Difference When Wind Speed Is 6 m/s?

    Admit Wed to speed the flow of air above the rear door of the cave is equal to 1,07Vo. Calculate the pressure difference p(1) - p(2) when the wind speed in the flat surface is equal to 6 m/s. Answer: 3,21 N/m^2 figure...
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    I can not calculate these Newton equations

    Thanks
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    What is the acceleration and tension in this two-block system?

    Thanks. if I had two pulleys in B the accelerations were aA = -4aB ?
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    How Do Braking Forces Affect Train Derailment Distances and Coupling Forces?

    Ok. Thank you very much
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    What is the acceleration and tension in this two-block system?

    I find: Block A T - Psin(30) = 90,72aA Block B -2T + P = 158,7aB How can I relate aA and aB ?
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    Sphere describing a circle, find tension

    Ok. Thanks
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    How Do Braking Forces Affect Train Derailment Distances and Coupling Forces?

    Yes. But I do not find the answer Fb/a = (2,67x10^5)/9,81 * 2,066 + 2,67x10^5 * 0,3 Fb/a = 136330,581 N
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    I can not calculate these Newton equations

    How to calculate sum of forces in the X axis? Only has the weight
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    How Do Braking Forces Affect Train Derailment Distances and Coupling Forces?

    I not find the correct answer FAB = FatA + FatB + (mA+mB)a FatA = PA . u FatB = PB . u FAB = 3,18x10^5 N
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    Sphere describing a circle, find tension

    Correct ? ZFn = m.an T - P = m . v^2/L T = 34,83 N ZFt = m.at at = 0 Tcos(theta) - P = 0 theta = 30,9°
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    I can not calculate these Newton equations

    Not Tcos (25) ? The acceleration of the block is the same car ?
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    How Do You Calculate Force and Tension in a Pulley System?

    Yes, thanks. How do I calculate aC?
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    How Do Braking Forces Affect Train Derailment Distances and Coupling Forces?

    Acceleration is the same for all cars? V^2 = (Vo)^2 +2aX a = V^2/2X = 2,066 m/s^2
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    How Do Braking Forces Affect Train Derailment Distances and Coupling Forces?

    Yes. Thanks U = 1,87x10^5 x = T/U = 97,86m How do I calculate (b)?