Test Pârghii

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| By IuditaBalc
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IuditaBalc
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  • 1/5 întrebări

    Folosind o rangă brațul forței active este mai mic decât brațul forței rezistente

    • True
    • False
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Test Pârghii - Quiz
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Clasa a VII-a
Toate subiectele sunt obligatorii.


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  • 2. 

    Un om ridică un dulap cu masa de 200 kg la înălțimea de 5 metri folosind un scripete fix. Calculează forța cu care trebuie să acționeze omul.

    • R=m*g R=200kg*10N/kg=2000N F=R, F=2000N

    • F=R/2 F=1000N

    Correct Answer
    A. R=m*g R=200kg*10N/kg=2000N F=R, F=2000N
    Explanation
    The correct answer is F=2000N. The force with which the person needs to act is equal to the weight of the object being lifted, which is calculated as the mass of the object multiplied by the acceleration due to gravity. In this case, the mass of the object is 200 kg and the acceleration due to gravity is 10 N/kg, resulting in a force of 2000N.

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  • 3. 

    Identifică pârgiile de tipul 2

    • Roaba

    • Cleștele de spart nuci

    • Ciocanul

    • Ranga

    Correct Answer
    A. Roaba
    Explanation
    The correct answer is "roaba". This is because the other options listed (cleștele de spart nuci, ciocanul, ranga) are not types of pârgii (levers), but rather different tools. A "roaba" is a type of lever commonly used for transporting heavy loads, making it the correct answer.

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  • 4. 

    Scrie un eseu cu titlul O zi la bunici in care să numești 10 pârghii.

  • 5. 

    Ranga este o parghie de tipul .................... Creionul este o pârghie de tipul ..................... Deplasarea forței active în cazul creionului este mai ............................. decât deplasarea forței rezistente.

    Correct Answer
    Ranga este o pârghie de tipul 1. Creionul este o pârghie de tipul 3. deplasarea forței active în cazul creionului este mai mică decât deplasarea forței rezistente
    Explanation
    The given answer states that "Ranga este o pârghie de tipul 1" which means that Ranga is a lever of type 1. It also states that "Creionul este o pârghie de tipul 3" which means that the pencil is a lever of type 3. Finally, it states that "deplasarea forței active în cazul creionului este mai mică decât deplasarea forței rezistente" which means that the displacement of the active force in the case of the pencil is smaller than the displacement of the resistant force.

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  • Current Version
  • Jul 22, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 28, 2012
    Quiz Created by
    IuditaBalc
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