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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
Related Questions: - A light whose frequency is equal to 6.0 x 10¹⁴ Hz is incident on a metal
- The concentric spheres of radii R and r have positive charges q₁ and q₂ with equal
- The value of workdone for rotating a magnet of magnetic moment M by an angle θ in external
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Topics: Laws of Motion
(103)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A light whose frequency is equal to 6.0 x 10¹⁴ Hz is incident on a metal
- The concentric spheres of radii R and r have positive charges q₁ and q₂ with equal
- The value of workdone for rotating a magnet of magnetic moment M by an angle θ in external
- A bomb of mass 30 kg at rest exploded into two pieces of masses 18 kg
- The electric potential at a point (x,y,z) is given by V = – x²y – xz³ + 4.
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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