Q22.A curved in a level road has a radius 75 m. The maximum speed of a car turning this curved road can be 30 m s-1 without skidding. If radius of curved road is changed to 48 m and the coefficient of friction between the tyres and the road remains same, then maximum allowed speed would be _____ m s-1.
What This Question Tests
This question requires applying the formula for maximum speed on a level curved road, first to find the coefficient of friction and then to calculate the new maximum speed.
Concepts Tested
Formulas Used
v_max = sqrt(μrg)
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📋 Question Details
- Chapter
- Laws of Motion
- Topic
- Circular Motion, Friction
- Year
- 2022
- Shift
- 25 Jun Shift 2
- Q Number
- Q22
- Type
- Numerical
- NCERT Ref
- Class 11 Physics Ch 5: Laws of Motion
More from this Chapter
Q1. Two forces are such that the sum of their magnitudes is 18 N and their resultant is 12 N which is perpendicular to the smaller force. Then the magnitudes of the forces are (1) 12 N, 6 N (2) 13 N, 5 N (3) 10 N, 8 N (4) 16 N, 2 N
Q6. The minimum velocity (in ms−1 ) with which a car driver must traverse a flat curve of radius 150 m and coefficient of friction 0.6 to avoid skidding is (1) 60 (2) 30 (3) 15 (4) 25
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