Study

G-12 Phys , Ch-2

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  • The ratio of shear stress and shear strain is called ______.
    shear modulus
  • Torque on the body caused by its weight; it occurs when the center of gravity of the body is not located on the axis of rotation is ____.
    gravitational torque
  • The property of a solid material that allows it to restore its shape after an external load is removed is called ____.
    elasticity
  • The material's highest limit before the material's plastic deformation can occur is _____ limit.
    elastic
  • A ______ is a diagram showing the magnitude and diirection of all the forces acting on a chosen body.
    free-body diagram
  • A _______ is a solid body in which deformation is neglected.
    rigid body
  • The static equilibrium is no ______ and _____ motion.
    linear , rotational
  • First equilibrium conditions, the sum of the forces acting on the rigid body is _____.
    zero
  • The torque is positive when the torque of a force causes _____ rotation about the axis of rotation.
    counterclockwise
  • _____ modulus is very important for medic and scientist.
    Young's
  • ______ deformation is beyond the elastic limit, materials do not obey Hooke's law.
    Plastic
  • The _______ is defined as the state of balance in a system.
    equilibrium
  • _____ is a measure of a material's rigidity or stiffness.
    Elastic modulus
  • The SI unit of stress is ______.
    Pa (pascal)
  • A change in shape due to the application of a force is called ______.
    deformation
  • The applied force per unit cross sectional area of a material that describes the magnitude of forces that cause deformation is _____.
    stress
  • The ratio of increase in length to the original length is called _____.
    tensile strain
  • The ratio of tensile stress and tensile strain is defined as ______.
    Young's modulus
  • Point where the weight vector is attached is _____.
    center of gravity
  • The amount of load required to cause plastic deformation is called the _______.
    plastic limit stress (PLS)