Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
COMEDK2025PhysicsLaws of MotionActual

What is the maximum speed with which a vehicle can take the turn on a curved frictionless smooth road of width 4 m , without skidding, if the radius of the circular curve of the road is 9 m and the outer edge of the road above the inner edge is 40 cm high? [given g= 1 0 ms ⁻² ]

Options

  1. A3 0 ms ⁻¹
  2. B3 ms ⁻¹
  3. C9 ~ms ⁻¹
  4. D4.5 ~ms ⁻¹

Correct answer

B. 3 ms ⁻¹

Step-by-step solution

For a vehicle moving on a banked road without skidding, the required centripetal force is provided by the horizontal component of the normal reaction. The angle of banking is given by = h b , where h is the height of the outer edge above the inner edge and b is the width of the road. Given h = 40 cm = 0.4 m and b = 4 m , we have = 0.4 4 = 0.1 . The maximum speed v for a banked road without friction is given by v = rg , where r is the radius of the curve and g is the acceleration due to gravity. Substituting the giv

Practice Laws of Motion on Quantrex Academy →

More from Laws of Motion

A block of metal, of 25g mass moves down without acceleration when the plane is inclined at an angle of 30^ . When the inclination is increased by 30^ , find the downward accelerat 2026A man weighs 80 kg. He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of 6 m/s ^2 . What would be his weight in kg? ( g = 10 m/s ^2 ) 2026A mass M is hung with a light inextensible string as shown in figure. Find the tension of the horizontal string. 2026A horizontal force of 5 N is applied on a stationary body of mass 5 kg, which is initially at rest on a frictionless table. The change in kinetic energy of the body in 10 s is 2026The apparent weight of a girl of mass 30 kg when she is in a lift moving vertically upwards with an acceleration of 2 ~ms ⁻² is (Acceleration due to gravity =10 ~m ~s ⁻² ) 2025If a stone of mass 0.5 kg tied to one end of a wire is whirled in a circular path of radius 2 m with a speed 40 rev / min in a horizontal plane, then the tension in the wire is nea 2025If the breaking strength of a rope is 4 3 times the weight of a person, then the maximum acceleration with which the person can safely climb up the rope is (g - accelereation due t 2025A block of mass 2 kg is placed on a rough horizontal surface. If a horizontal force of 20 N acting on the block produces an acceleration of 7 ~m ~s ⁻² in it, then the coefficient o 2025 Full Laws of Motion list All COMEDK PYQs