LISA asked in Science & MathematicsPhysics · 7 days ago

What is the tension in the string?

Three blocks of masses 11.7 kg, 5.16 kg, and

2.76 kg are connected by light strings that

pass over frictionless pulleys as shown in the

figure. The acceleration of the 5.16 kg block

is 1.9 m/s

2

to the left and the surfaces are

rough.

The acceleration of gravity is 9.8 m/s

2 .

Find the tension in the string connecting

the 11.7 kg block suspended on the left and

the 5.16 kg block on the flat surface. (Assume

the same µk for both blocks in contact with

surfaces.)

Answer in units of N

With explanation please!

4 Answers

Relevance
  • NCS
    Lv 7
    7 days ago
    Favorite Answer

    for the mass accelerating down (assuming "suspended" means "hanging freely," the required tension is such that

    T = m(g - a)

    so here

    T = 11.7kg * (9.8 - 1.9)m/s² = 92 N

    unless you have some sort of compound pulley arrangement.

    Hope this helps!

  • Rick
    Lv 6
    7 days ago

    < that pass over frictionless pulleys as shown in the figure >

    this figure is given not just to take up space but so you understand the system to be able to answer the question.  For the same reason, we need to be able to see that figure.

  • 7 days ago

    As the other commenter mentioned, we cannot do this without the diagram referenced in the question. Attach a picture if you want help.

  • alex
    Lv 7
    7 days ago

    " as shown in the

    figure"

    where's it ? Need diagram , figure ...

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