May asked in Science & MathematicsPhysics · 1 month ago

I have a physics question!?

Three identical blocks connected by ideal strings are being pulled along a horizontal frictionless surface by a horizontal force F⃗ . The magnitude of the tension in the string between blocks B and C is T = 3.00 N . Assume that each block has mass m = 0.400 kg .

What is the magnitude F of the force?

What is the tension TAb in the string between block A and block B?

2 Answers

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  • 1 month ago
    Favorite Answer

    Assuming the blocks are A B C force (as opposed to other possible combinations)

    let m be mass of each block (0.4)

    F = ma

    a = F/3m = F/1.2

    for blocks A+B, m = 0.8 

    a is the same

    F₂ = ma = 0.8(F/1.2) = (2/3)F = 3 N

    F = (3/2)3 = 4.5 N

    for F₃ between A and B

    m = 0.4

    a is the same

    F₃ = ma = 0.4(F/1.2) = 0.4(4.5/1.2) = 4.5/0.3 = 1.5 N

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  • Anonymous
    1 month ago

    F = Tbc*3 = 3.00*3 = 9.00 N

    Tab = Tbc*2 0 3.00*2 = 6.00 N

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