Physics Torque Calculation and Mass Measurement
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Questions and Answers

What is the magnitude of the torque applied in the given example?

  • 480 N·m
  • 800 N·m
  • 160 N·m
  • 320 N·m (correct)

    • What is the gravitation acceleration on the Moon?

  • 5.0 m/s²
  • 9.8 m/s²
  • 1.625 m/s² (correct)
  • 3.7 m/s²

    • What is the weight of an 8-kg rover on the Moon?

  • 39.2 N
  • 64.0 N
  • 78.4 N
  • 12.6 N (correct)

    • What is the purpose of a wrench in the context of the given example?

    <p>To provide a lever arm to increase the torque applied to a bolt.</p> Signup and view all the answers

    What is the relationship between force and torque?

    <p>Torque is the product of force and distance from the axis of rotation.</p> Signup and view all the answers

    What is the role of the angle θ in the torque formula?

    <p>It determines the magnitude of the torque.</p> Signup and view all the answers

    What is the relationship between force, mass, and acceleration according to Newton's second law of motion?

    <p>Force = Mass x Acceleration</p> Signup and view all the answers

    What is the definition of weight in the context of forces?

    <p>The downward force exerted by a mass due to gravity</p> Signup and view all the answers

    In the example given, what was Jenkins' acceleration when he hit the brick wall?

    <p>45 m/s^2</p> Signup and view all the answers

    Which of the following formulas represents the relationship between weight, mass, and the acceleration due to gravity?

    <p>Weight = Mass x Acceleration due to gravity</p> Signup and view all the answers

    If the force generated by the astronaut's propulsion unit is 30 N, what will happen to the value of this force as the astronaut accelerates?

    <p>The force will remain constant</p> Signup and view all the answers

    What is the magnitude of the torque in the given example?

    <p>$10 \text{N}\cdot\text{m}$</p> Signup and view all the answers

    If Jenkins had a mass of 100 kg instead of 80 kg, what would be the force exerted on him when he hit the brick wall?

    <p>4500 N</p> Signup and view all the answers

    Which of the following is NOT a method to calculate mass?

    <p>Mass = energy / speed of light</p> Signup and view all the answers

    If an object has a mass of 20 kg on Earth, what would be its weight on the Moon, where the gravitational acceleration is approximately one-sixth of Earth's?

    <p>$32.67 \text{N}$</p> Signup and view all the answers

    What is the unit of measurement for weight?

    <p>Newton (N)</p> Signup and view all the answers

    If the density of ethyl alcohol is $789 \text{kg}/\text{m}^3$ and it is filled in a beaker of $200 \text{mL}$, what is the weight of the ethyl alcohol in the beaker?

    <p>$1.578 \text{N}$</p> Signup and view all the answers

    What is the SI unit of mass?

    <p>Kilogram (kg)</p> Signup and view all the answers

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