Practice Test | Kullabs.com
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  • In first class lever ______.

    fulcrum lies anywhere between the effort and load
    none of these
    effort is between the load and the fulcrum
    load is between the effort and fulcrum
  • Bottle opener is an example of ______.

    Second class Lever
    Third class Lever
    both b and c
    First Class Lever
  • The effort arm of a lever is 4m long and the load arm is 2m long. What is the effort required to lift a load of 40N?

    15 N
    25 N
    30 N
    20N
  • The part of lever that carries the load is called ______.

    force arm
    fulcrum
    effort arm
    load arm
  • The part of lever where effort is applied is called ______.

    effort arm
    fulcrum
    load arm
    effort arm
  • The components of a lever are _____.

    load
    load arm
    all of the above
    effort
  • The component of a lever which lets the bar to move freely in an axis is called ______.

    effort
    load arm
    fulcrum
    effort arm
  • Which of the following is a first class lever?

    see-saw
    scissors
    crow-bar
    all of the above
  • Which of the following is not the first class lever?

    wheel barrow
    all of the above
    crow-bar
    see-saw
  • For a lever to be a first class lever which component has to be in the middle?

    effort arm
    effort
    load
    Fulcrum
  • In first class lever ______.

    effort arm is equal to the load arm
    effort arm is longer than load arm
    load arm is longer than effort arm
    effort arm is shorter than load arm
  • In second class lever ______.

    effort arm is shorter than load arm
    effort arm is equal to the load arm
    effort arm is longer than load arm
    load arm is longer than effort arm
  • In third class lever ______.

    effort arm is longer than load arm
    effort arm is shorter than load arm
    effort arm is equal to the load arm
    load arm is shorter than effort arm
  • The lever in equilibrium state is defined by the equation ______.

    load / load arm = effort / effort arm
    load - load arm = effort - effort arm
    load x load arm = effort x effort arm
    load + load arm = effort + effort arm
  • For a lever to be a second class lever which component has to be in the middle?

    load
    effort arm
    effort
    fulcrum
  • Which one of the following is not a second class lever?

    lemon squeezer
    handle of the water pump
    nut cracker
    wheel barrow
  • For a lever to be a third class lever which component has to be in the middle?

    effort arm
    effort
    fulcrum
    load
  • In a first class lever if we want to gain more force the position of fulcrum should be ______.

    closer to the effort
    anywhere in between. The position of fulcrum doesn't matter.
    closer to the load
    in exact middle of the load and the effort
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