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A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45°, the speed of the car is :
Options
(a) 20 ms⁻¹
(b) 30 ms⁻¹
(c) 5ms⁻¹
(d) 10 ms⁻¹
Correct Answer:
30 ms⁻¹
Explanation:
For banking tan θ = V² / Rg
tan 45 = V² / 90 x 10 = 1
V = 30 m/s
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Topics: Laws of Motion
(103)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If the ionisation energy for the hydrogen atom is 13.6 eV, the energy required
- Two metallic spheres of radii 1 cm and 3 cm are given charges of -1 x 10⁻² C
- The area of cross-section of one limb of an U-tube is twice that of the other.
- A body is rolling down an inclined plane.If KE of rotation is 40% of KE in a translatory
- Two charges of equal magnitude q are placed in air at a distance 2a
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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