NEET Physics: vehicle on a level circular road Practice Questions
15 free multiple-choice questions on vehicle on a level circular road (Laws of Motion) for NEET Physics, each with the correct answer and a step-by-step explanation. Attempt a question, then reveal the solution to check your reasoning.
Practice thousands more NEET questions in the app →Q1. What is the minimum speed required for a vehicle to successfully take the turn on a level road without skidding?
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Correct answer: B — Speed equal to velocity
The minimum speed is related to the radius and the required centripetal force, ensuring that the required force is provided by the friction between the tires and the road.
Q2. A stone tied to a string is whirled in a horizontal circle. Which force provides the necessary centripetal force to keep the stone moving in the circular path?
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Correct answer: A — Centripetal force directed towards the center of the circle
Centripetal force is the net force required to cause the circular motion, and it is always directed towards the center of the circle. In this case, the tension in the string provides this inward force.
Q3. The force that provides the necessary centripetal force for a vehicle to move in a circular path is provided by:
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Correct answer: C — The static friction force exerted by the road on the vehicle
In this scenario, the horizontal force (friction between the tires and the road) acts as the required centripetal force, directed towards the center.
Q4. If a vehicle is moving at a constant speed in a horizontal circular track, what must be true about the net force acting on the vehicle?
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Correct answer: A — The net force is zero
For an object moving at a constant speed in a circle (uniform circular motion), the acceleration is purely centripetal (directed towards the center). According to Newton's second law, if speed is constant, the net force is zero, meaning the required centripetal force is provided entirely by the necessary force (e.g., friction or tension).
Q5. If a vehicle is traveling on a circular road, the tension in the rope or cable connecting the vehicle to the road must be _______ to maintain the curve.
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Correct answer: D — Increasing continuously
To maintain the circular path, the tension must change according to the centripetal force equation. As the vehicle moves, the required tension changes based on the speed and radius, meaning it must continuously change.
Q6. For a vehicle moving at a constant speed in a circular path, the direction of the required centripetal force is always:
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Correct answer: C — Perpendicular to the direction of motion, towards the center
Centripetal force is the net force acting radially inward, directed towards the center of the circular path.
Q7. A vehicle is moving in a perfectly circular path on a level road. The force directed towards the center of the circle is known as:
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Correct answer: B — Centripetal force
The net inward force required to keep an object moving in a circular path is called the centripetal force.
Q8. Which physical quantity describes the rate of change of the direction of the velocity of an object moving in a circle?
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Correct answer: A — Centripetal acceleration
Centripetal acceleration is the acceleration responsible for changing the direction of the velocity, directed towards the center of the circle.
Q9. In the context of circular motion, the term 'centripetal acceleration' is always directed:
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Correct answer: C — Towards the center
Centripetal acceleration is the acceleration directed towards the center of the circular path, responsible for changing the direction of the velocity.
Q10. A car is moving in a uniform circular motion on a level road. The force acting towards the center of the circle is known as:
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Correct answer: B — Centripetal force
The net force directed towards the center of the circular path, which causes the circular motion, is defined as the centripetal force.
Q11. What is the minimum condition required for a vehicle to successfully move along a circular track on a level surface?
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Correct answer: B — Sufficient centripetal force
For a vehicle to maintain circular motion, the necessary centripetal force must be provided by the frictional force between the vehicle and the road.
Q12. A vehicle is moving in a uniform circular motion. The force responsible for maintaining this circular motion is called:
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Correct answer: B — Centripetal force
Centripetal force is the net force required to keep an object moving in a circular path, always directed towards the center of the circle.
Q13. For a vehicle to safely negotiate a sharp curve on a level road, the road must be banked at an appropriate angle. The banking helps in providing which type of force?
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Correct answer: C — Centripetal force
Banking the road utilizes the angle to provide the necessary horizontal component of the normal force, which supplies the required centripetal force.
Q14. In the context of circular motion on a level road, if the speed of the vehicle is doubled while maintaining the same radius of the curve, what happens to the required centripetal force?
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Correct answer: C — It is doubled
Centripetal force (F_c = mv²/r) is proportional to the square of the velocity (v²). If speed (v) is doubled, the required centripetal force is quadrupled (doubled squared).
Q15. When a vehicle moves in a uniform circular path, its velocity is constant. What is the nature of the acceleration acting on the vehicle?
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Correct answer: C — Centripetal acceleration
Although the speed is constant (uniform motion), the direction of velocity is continuously changing, meaning there is acceleration directed towards the center of the circle, known as centripetal acceleration.
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