Physics Chapter: Moment of Force (Torque)
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Questions and Answers

What is the primary unit for measuring mass?

  • Kilograms (correct)
  • Grams
  • Pounds
  • Newtons

    • Weight is a scalar quantity.

    False

    What device is used to measure small lengths accurately in mm?

    Micrometer screw gauge

    The formula to calculate weight is represented as $W = ______$

    <p>mg</p> Signup and view all the answers

    Match the instruments with what they measure:

    <p>Vernier Caliper = Small lengths in cm Micrometer Screw Gauge = Small lengths in mm Electronic Balance = Mass in kg Spring Balance = Weight in N</p> Signup and view all the answers

    What does the formula $T = F imes d$ represent?

    <p>Moment of Force</p> Signup and view all the answers

    The moment of force is measured in Joules.

    <p>False</p> Signup and view all the answers

    What must be increased to enhance the turning effect of a moment?

    <p>weight or distance</p> Signup and view all the answers

    A moment that tends to rotate an object in a counterclockwise direction is known as an ______.

    <p>anticlockwise moment</p> Signup and view all the answers

    Match the following terms with their descriptions:

    <p>Clockwise Moment = Moment that rotates an object in a clockwise direction Anticlockwise Moment = Moment that rotates an object in a counterclockwise direction Force = The push or pull on an object Distance = The length from the pivot point to where the force is applied</p> Signup and view all the answers

    What is the SI unit of volume?

    <p>$m^{3}$</p> Signup and view all the answers

    Which of the following is classified as kinetic energy?

    <p>Sound energy</p> Signup and view all the answers

    Qualitative observation relies solely on numerical data.

    <p>False</p> Signup and view all the answers

    A cube has a volume formula of $s imes s imes s$.

    <p>True</p> Signup and view all the answers

    What does it mean to 'verify answer' in problem-solving?

    <p>It means to check if the solution obtained is correct and makes sense in the context.</p> Signup and view all the answers

    What SI unit is used to measure mass?

    <p>kilogram</p> Signup and view all the answers

    The volume of a cylinder is calculated using the formula __________.

    <p>$ rac{4}{3} imes eta r^{2}h$</p> Signup and view all the answers

    The base quantity of length is measured in ______.

    <p>metres</p> Signup and view all the answers

    Match the following SI units with their corresponding base quantities:

    <p>metre = Length kilogram = Mass second = Time ampere = Electric current</p> Signup and view all the answers

    Match the solid shapes with their respective volume formulas:

    <p>Cube = $s^{3}$ Cuboid = $L imes W imes H$ Cylinder = $eta r^{2}h$ Sphere = $ rac{4}{3} eta r^{3}$</p> Signup and view all the answers

    What is the formula for density in a substance?

    <p>$ ho = rac{m}{V}$</p> Signup and view all the answers

    The volume of water displaced can be found using the formula $V = V_1 - V_2$.

    <p>False</p> Signup and view all the answers

    What is the correct general format for writing numbers in scientific notation?

    <p>$a imes 10^{b}$</p> Signup and view all the answers

    What is the relationship between mass (m), density ($ ho$), and volume (V)?

    <p>m = $ ho imes V$</p> Signup and view all the answers

    What does Hooke's Law state?

    <p>The extension of a spring is directly proportional to the load applied.</p> Signup and view all the answers

    To compute the gradient of a graph, you use the formula $Gradient = \frac{}{}$.

    <p>y_2 - y_1, x_2 - x_1</p> Signup and view all the answers

    Speed is a vector quantity.

    <p>False</p> Signup and view all the answers

    The formula for Hooke's Law is $F = kx$. If the force is doubled, the extension of the spring will also double.

    <p>True</p> Signup and view all the answers

    Match the following units to their conversions:

    <p>1 g/cm³ = 1000 kg/m³ 1 kg/m³ = 1000 g/cm³ 1 L = 1000 mL 1 m³ = 1000 L</p> Signup and view all the answers

    What is the significance of the spring constant (k) in Hooke's Law?

    <p>The spring constant (k) indicates the stiffness of the spring.</p> Signup and view all the answers

    Define displacement in the context of physics.

    <p>Displacement is the distance moved in a specific direction and represents the change in position.</p> Signup and view all the answers

    The measure of magnitude of separation between two points is called ______.

    <p>distance</p> Signup and view all the answers

    The formula to calculate the spring constant is $k = rac{F}{______}$

    <p>x</p> Signup and view all the answers

    Match the concepts related to Hooke's Law with their definitions:

    <p>F = Force applied to the spring k = Spring constant indicating stiffness x = Extension of the spring Elastic limit = Maximum load without permanent deformation</p> Signup and view all the answers

    Which of the following statements is true about digital measuring instruments?

    <p>They can be read directly off of a display.</p> Signup and view all the answers

    Linear scales have evenly spaced markings.

    <p>True</p> Signup and view all the answers

    What is the process of setting or checking the graduations on a scale of a measuring instrument called?

    <p>calibration</p> Signup and view all the answers

    The __________ of a measuring instrument refers to how close an experimental value is to the true value.

    <p>accuracy</p> Signup and view all the answers

    Match the following measuring instrument characteristics with their definitions:

    <p>Range = The size of the interval between the max and min value Sensitivity = Response to the smallest change in quantity Accuracy = Closeness of experimental value to true value Precision = The smallness of uncertainty in measurement</p> Signup and view all the answers

    What is the derived unit for density?

    <p>kg/m³</p> Signup and view all the answers

    The prefix 'Mega' represents a value of 10^6.

    <p>True</p> Signup and view all the answers

    What formula is used to calculate the area of a rectangle?

    <p>Length × breadth</p> Signup and view all the answers

    The prefix 'Kilo' corresponds to the value of __________ in scientific notation.

    <p>10^3</p> Signup and view all the answers

    Match the following prefixes with their corresponding values in scientific notation:

    <p>Giga = 10^9 Centi = 10^-2 Milli = 10^-3 Micro = 10^-6</p> Signup and view all the answers

    Study Notes

    Moment of Force (Torque)

    • The product of the force and the distance between the force and the pivot.
    • Formula:
      • τ = F × d
      • where:
        • τ = torque
        • F = force
        • d = distance

    Clockwise & Anti-clockwise Moment

    • A moment which tends to rotate an object or system in a clockwise direction is a clockwise moment (CW).
    • A moment which tends to rotate an object or system in an anticlockwise direction is an anticlockwise moment (ACW)
    • SI unit is Newton Metres (Nm)

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    Description

    Test your understanding of the moment of force, also known as torque. This quiz covers the essential formulas, units, and concepts related to clockwise and anticlockwise moments. Dive in to explore the foundational principles of rotational dynamics.

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