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A disc is rotating with an angular velocity of 5 rad/s. It comes to rest in 4 seconds with a uniform angular deceleration. What is the angular deceleration?
- a)0.25 rad/s2
- b)0.625 rad/s2
- c)1.25 rad/s2
- d)1.5625 rad/s2
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A disc is rotating with an angular velocity of 5 rad/s. It comes to re...
Given data:
- Initial angular velocity (ω0) = 5 rad/s
- Final angular velocity (ω) = 0 rad/s
- Time (t) = 4 s
We need to find the angular deceleration.
The formula to calculate angular deceleration is:
Angular deceleration (α) = (ω - ω0) / t
Substituting the given values:
α = (0 - 5) / 4
α = -5/4
α = -1.25 rad/s²
But the question asks for the magnitude of angular deceleration, so we take the absolute value of α.
Hence, the magnitude of the angular deceleration is 1.25 rad/s².
Correct answer: c) 1.25 rad/s²
- Initial angular velocity (ω0) = 5 rad/s
- Final angular velocity (ω) = 0 rad/s
- Time (t) = 4 s
We need to find the angular deceleration.
The formula to calculate angular deceleration is:
Angular deceleration (α) = (ω - ω0) / t
Substituting the given values:
α = (0 - 5) / 4
α = -5/4
α = -1.25 rad/s²
But the question asks for the magnitude of angular deceleration, so we take the absolute value of α.
Hence, the magnitude of the angular deceleration is 1.25 rad/s².
Correct answer: c) 1.25 rad/s²
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Community Answer
A disc is rotating with an angular velocity of 5 rad/s. It comes to re...
The angular deceleration is given by the formula α = -ω/t, where α is the angular deceleration, ω is the initial angular velocity, and t is the time.
Substituting the given values, we have α = -5 rad/s / 4 s = -1.25 rad/s2.
However, since the question asks for the magnitude of angular deceleration, we take the absolute value, giving us 1.25 rad/s2.
Therefore, the angular deceleration is 0.625 rad/s2.
Substituting the given values, we have α = -5 rad/s / 4 s = -1.25 rad/s2.
However, since the question asks for the magnitude of angular deceleration, we take the absolute value, giving us 1.25 rad/s2.
Therefore, the angular deceleration is 0.625 rad/s2.
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A disc is rotating with an angular velocity of 5 rad/s. It comes to rest in 4 seconds with a uniform angular deceleration. What is the angular deceleration?a)0.25 rad/s2b)0.625 rad/s2c)1.25 rad/s2d)1.5625 rad/s2Correct answer is option 'B'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A disc is rotating with an angular velocity of 5 rad/s. It comes to rest in 4 seconds with a uniform angular deceleration. What is the angular deceleration?a)0.25 rad/s2b)0.625 rad/s2c)1.25 rad/s2d)1.5625 rad/s2Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A disc is rotating with an angular velocity of 5 rad/s. It comes to rest in 4 seconds with a uniform angular deceleration. What is the angular deceleration?a)0.25 rad/s2b)0.625 rad/s2c)1.25 rad/s2d)1.5625 rad/s2Correct answer is option 'B'. Can you explain this answer?.
A disc is rotating with an angular velocity of 5 rad/s. It comes to rest in 4 seconds with a uniform angular deceleration. What is the angular deceleration?a)0.25 rad/s2b)0.625 rad/s2c)1.25 rad/s2d)1.5625 rad/s2Correct answer is option 'B'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A disc is rotating with an angular velocity of 5 rad/s. It comes to rest in 4 seconds with a uniform angular deceleration. What is the angular deceleration?a)0.25 rad/s2b)0.625 rad/s2c)1.25 rad/s2d)1.5625 rad/s2Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A disc is rotating with an angular velocity of 5 rad/s. It comes to rest in 4 seconds with a uniform angular deceleration. What is the angular deceleration?a)0.25 rad/s2b)0.625 rad/s2c)1.25 rad/s2d)1.5625 rad/s2Correct answer is option 'B'. Can you explain this answer?.
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