Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET20227 Jul 2022Evening ShiftPhysicsLaws of MotionActual

Which of the following is true about the coefficient of static friction ( _s ) and the coefficient of kinematic friction ( _k )

Options

  1. A_s is always equal to _k
  2. B_s is always greater than _k
  3. C_s is always less than _k
  4. DDepending upon applications. _s can be greate less or equal to _k

Correct answer

B. _s is always greater than _k

Step-by-step solution

Graph of friction is as shown So, Limiting value of static friction > Kinetic friction array cc & _s N> _k N or & _s> _k array

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 AP EAMCET PYQs