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A demo CD, 8 cm in diameter, spins 200 rev/min. Determine its linear velocity in cm/s for a point 3 cm from the center.
- a)62.8 cm/s
- b)20/6 cm/s
- c)20.9 cm/s
- d)40 π/6 cm/s
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A demo CD, 8 cm in diameter, spins 200 rev/min. Determine its linear v...
Given:
Diameter of CD = 8 cm
Radius of CD = 4 cm
Angular velocity = 200 rev/min
Point from center = 3 cm
To find:
Linear velocity in cm/s
Solution:
We can use the formula:
v = rω
where,
v = linear velocity
r = distance from center
ω = angular velocity
Substituting the given values, we get:
v = 3 cm × (200 rev/min × 2π rad/rev) / 60 s/min
v = 62.8 cm/s
Therefore, the linear velocity of the point 3 cm from the center of the demo CD is 62.8 cm/s.
Hence, the correct option is (a) 62.8 cm/s.
Diameter of CD = 8 cm
Radius of CD = 4 cm
Angular velocity = 200 rev/min
Point from center = 3 cm
To find:
Linear velocity in cm/s
Solution:
We can use the formula:
v = rω
where,
v = linear velocity
r = distance from center
ω = angular velocity
Substituting the given values, we get:
v = 3 cm × (200 rev/min × 2π rad/rev) / 60 s/min
v = 62.8 cm/s
Therefore, the linear velocity of the point 3 cm from the center of the demo CD is 62.8 cm/s.
Hence, the correct option is (a) 62.8 cm/s.
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A demo CD, 8 cm in diameter, spins 200 rev/min. Determine its linear velocity in cm/s for a point 3 cm from the center.a)62.8 cm/sb)20/6 cm/sc)20.9 cm/sd)40 π/6 cm/sCorrect answer is option 'A'. Can you explain this answer? for Class 11 2026 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about A demo CD, 8 cm in diameter, spins 200 rev/min. Determine its linear velocity in cm/s for a point 3 cm from the center.a)62.8 cm/sb)20/6 cm/sc)20.9 cm/sd)40 π/6 cm/sCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A demo CD, 8 cm in diameter, spins 200 rev/min. Determine its linear velocity in cm/s for a point 3 cm from the center.a)62.8 cm/sb)20/6 cm/sc)20.9 cm/sd)40 π/6 cm/sCorrect answer is option 'A'. Can you explain this answer?.
A demo CD, 8 cm in diameter, spins 200 rev/min. Determine its linear velocity in cm/s for a point 3 cm from the center.a)62.8 cm/sb)20/6 cm/sc)20.9 cm/sd)40 π/6 cm/sCorrect answer is option 'A'. Can you explain this answer? for Class 11 2026 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about A demo CD, 8 cm in diameter, spins 200 rev/min. Determine its linear velocity in cm/s for a point 3 cm from the center.a)62.8 cm/sb)20/6 cm/sc)20.9 cm/sd)40 π/6 cm/sCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A demo CD, 8 cm in diameter, spins 200 rev/min. Determine its linear velocity in cm/s for a point 3 cm from the center.a)62.8 cm/sb)20/6 cm/sc)20.9 cm/sd)40 π/6 cm/sCorrect answer is option 'A'. Can you explain this answer?.
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