NEET Physics: Laws of Motion — MCQ Test 14

Q6. A \( 6 \, \text{kg} \) block on a \( 53^\circ \) incline (\( \mu_s = 0.6 \)) is pulled upward by a rope at \( 37^\circ \) to the incline with a force just sufficient to initiate motion. What is the tension? (Take \( g = 10 \, \text{m/s}^2 \), \( \sin 53^\circ = 0.8 \), \( \cos 53^\circ = 0.6 \), \( \sin 37^\circ = 0.6 \), \( \cos 37^\circ = 0.8 \))

Q7. A \( 0.5 \, \text{kg} \) stone is whirled in a vertical circle of radius \( 2 \, \text{m} \) at \( 30 \, \text{rev/min} \). What is the tension at the top? (Take \( g = 10 \, \text{m/s}^2 \))

Q8. A car of mass \( 800 \, \text{kg} \) takes a circular turn of radius \( 20 \, \text{m} \) at \( 10 \, \text{m/s} \) on a level road. What is the frictional force providing the centripetal force?

Q9. A \( 0.1 \, \text{kg} \) ball moving at \( 20 \, \text{m/s} \) hits a wall at \( 30^\circ \) and rebounds at the same speed and angle. What is the impulse along the wall? (Take \( \sin 30^\circ = 0.5 \), \( \cos 30^\circ = 0.866 \))

Q10. A \( 6 \, \text{kg} \) block on a horizontal surface (\( \mu_k = 0.4 \)) is pulled by a \( 8 \, \text{kg} \) mass over a pulley. A \( 25 \, \text{N} \) force at \( 60^\circ \) to the horizontal aids the \( 6 \, \text{kg} \) block, and a \( 15 \, \text{N} \) force opposes the \( 8 \, \text{kg} \) mass. What is the tension? (Take \( g = 10 \, \text{m/s}^2 \), \( \sin 60^\circ = 0.866 \), \( \cos 60^\circ = 0.5 \))

NEET Physics — Laws of Motion

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A stone of mass \( 0.3 \, \text{kg} \) is whirled in a horizontal circle of radius \( 2 \, \text{m} \) at \( 20 \, \text{rev/min} \). What is the tension in the string?

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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 Horizontal, Connected, Acceleration, Accelerating, Tangential, and Reducing.

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 stone of mass \( 0.3 \, \text{kg} \) is whirled in a horizontal circle of radius \( 2 \, \text{m} \) at \( 20 \, \text{rev/min} \). What is the tension in the string?

  • A. 1.5 N
  • B. 2.6 N
  • C. 3.5 N
  • D. 4.0 N

Q2. A \( 5 \, \text{kg} \) block on a horizontal surface (\( \mu_k = 0.3 \)) is connected to a \( 3 \, \text{kg} \) mass over a pulley. A force of \( 20 \, \text{N} \) at \( 60^\circ \) to the horizontal pulls the \( 5 \, \text{kg} \) block. What is the acceleration? (Take \( g = 10 \, \text{m/s}^2 \), \( \sin 60^\circ = 0.866 \), \( \cos 60^\circ = 0.5 \))

  • A. 3 m/s²
  • B. 3.5 m/s²
  • C. 3.78 m/s²
  • D. 4 m/s²

Q3. A \( 55 \, \text{kg} \) man in a lift accelerating upward at \( 1 \, \text{m/s}^2 \) stands on a scale. What is the reading? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. 575 N
  • B. 605 N
  • C. 625 N
  • D. 650 N

Q4. A \( 1500 \, \text{kg} \) car on a banked road (\( \theta = 20^\circ \), \( \mu_s = 0.25 \)) turns at radius \( 60 \, \text{m} \) with a tangential force of \( 3000 \, \text{N} \) reducing speed. What is the maximum initial speed? (Take \( g = 10 \, \text{m/s}^2 \), \( \tan 20^\circ \approx 0.364 \))

  • A. 18 m/s
  • B. 20.1 m/s
  • C. 22 m/s
  • D. 24 m/s

Q5. A \( 0.36 \, \text{kg} \) stone is whirled in a horizontal circle of radius \( 1.7 \, \text{m} \) with a tension of \( 14 \, \text{N} \). What is the speed? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. 7.5 m/s
  • B. 8.1 m/s
  • C. 8.8 m/s
  • D. 9.5 m/s

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