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Indian Navy Pilot Mechanical Properties of Fluids — practice questions

Explore 6 free Mechanical Properties of Fluids questions in Indian Navy Pilot Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Mechanical Properties of Fluids questions and exercises with answers

Showing questions 1–6 of 6.

Newton's FIRST law is also called the law of:Read the answer and worked solution →The SI unit of force is the:Read the answer and worked solution →A block of mass 2 kg on a smooth incline at 30°. Acceleration down the incline (g = 10):Read the answer and worked solution →A pendulum of mass m swings to amplitude angle θ. At the lowest point of swing, the TENSION in the string equals:Read the answer and worked solution →Match each property of matterRead the answer and worked solution →Solids topic or fluids topic?Read the answer and worked solution →

Worked practice questions

Newton's FIRST law is also called the law of:

  1. Inertia
  2. Action and reaction
  3. Gravity
  4. Friction
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Correct answer: A. Inertia

Law of Inertia: An object at rest stays at rest, and an object in motion stays in motion at constant velocity, unless acted upon by an unbalanced external force.

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The SI unit of force is the:

  1. joule
  2. newton
  3. watt
  4. pascal
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Correct answer: B. newton

Newton (N). 1 N = 1 kg·m/s² — the force that gives a 1 kg mass an acceleration of 1 m/s².

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A block of mass 2 kg on a smooth incline at 30°. Acceleration down the incline (g = 10):

  1. 2.5 m/s²
  2. 5 m/s²
  3. 10 m/s²
  4. 20 m/s²
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Correct answer: B. 5 m/s²

**Down the smooth incline:** a = g sin θ = 10 × sin 30° = 10 × 0.5 = 5 m/s². Mass doesn't matter on smooth incline.

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