NEET Physics: Laws of Motion — MCQ Test 18

Q6. A \( 0.3 \, \text{kg} \) stone is whirled in a horizontal circle of radius \( 1.6 \, \text{m} \) at \( 45 \, \text{rev/min} \). What is the tension? (Take \( g = 10 \, \text{m/s}^2 \))

Q7. A \( 0.45 \, \text{kg} \) stone in a vertical circle of radius \( 1.8 \, \text{m} \) has a speed of \( 14 \, \text{m/s} \) at the bottom. What is the tension at the top? (Take \( g = 10 \, \text{m/s}^2 \))

Q8. A \( 800 \, \text{kg} \) car turns on a banked road (\( \theta = 20^\circ \)) with radius \( 40 \, \text{m} \) at the optimum speed to avoid friction. What is the speed? (Take \( g = 10 \, \text{m/s}^2 \), \( \tan 20^\circ \approx 0.364 \))

Q9. A \( 0.31 \, \text{kg} \) stone is whirled in a horizontal circle of radius \( 1.3 \, \text{m} \) at \( 54 \, \text{rev/min} \). What is the tension? (Take \( g = 10 \, \text{m/s}^2 \))

Q10. A \( 4 \, \text{kg} \) block on a \( 30^\circ \) incline (\( \mu_s = 0.3 \)) is pushed downward by a horizontal force just sufficient to start motion. What is the force? (Take \( g = 10 \, \text{m/s}^2 \), \( \sin 30^\circ = 0.5 \), \( \cos 30^\circ = 0.866 \))

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A \( 5.8 \, \text{kg} \) block on a \( 45^\circ \) incline (\( \mu_k = 0.25 \)) is pulled upward by a \( 7.8 \, \text{kg} \) mass over a pulley. What is the tension? (Take \( g = 10 \, \text{m/s}^2 \), \( \sin 45^\circ = 0.707 \), \( \cos 45^\circ = 0.707 \))

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Laws of Motion. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Accelerating, Connected, Frictionless, Acceleration, Horizontal, and Sufficient.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. A \( 5.8 \, \text{kg} \) block on a \( 45^\circ \) incline (\( \mu_k = 0.25 \)) is pulled upward by a \( 7.8 \, \text{kg} \) mass over a pulley. What is the tension? (Take \( g = 10 \, \text{m/s}^2 \), \( \sin 45^\circ = 0.707 \), \( \cos 45^\circ = 0.707 \))

  • A. 58 N
  • B. 62.7 N
  • C. 66 N
  • D. 70 N

Q2. A \( 80 \, \text{kg} \) man in a lift accelerating upward at \( 1.5 \, \text{m/s}^2 \) stands on a scale. What is the reading? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. 850 N
  • B. 920 N
  • C. 980 N
  • D. 1000 N

Q3. Two masses \( 4 \, \text{kg} \) and \( 6 \, \text{kg} \) are connected by a light string over a frictionless pulley. What is the acceleration of the system? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. 1 m/s²
  • B. 2 m/s²
  • C. 3 m/s²
  • D. 4 m/s²

Q4. A \( 5.2 \, \text{kg} \) block on a \( 53^\circ \) incline (\( \mu_s = 0.3 \)) is pulled upward by a horizontal force just sufficient to start motion. What is the force? (Take \( g = 10 \, \text{m/s}^2 \), \( \sin 53^\circ = 0.8 \), \( \cos 53^\circ = 0.6 \))

  • A. 130 N
  • B. 141.6 N
  • C. 150 N
  • D. 160 N

Q5. A \( 0.25 \, \text{kg} \) stone is whirled in a horizontal circle of radius \( 2 \, \text{m} \) with a tension of \( 10 \, \text{N} \). What is the speed? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. 8 m/s
  • B. 8.9 m/s
  • C. 10 m/s
  • D. 12 m/s

+ 5 more questions in the actual test

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