MEDIUM
NEET
IMPORTANT
Earn 100

A particle is moving on rough horizontal ground with an initial velocity . If of its kinetic energy is lost due to friction in time , then the coefficient of friction between the particle and the ground is
(a)
(b)
(c)
(d)

50% studentsanswered this correctly

Important Questions on Friction
EASY
NEET
IMPORTANT
gravity distance from the lower end. Wall's reaction will be, in

EASY
NEET
IMPORTANT
Two blocks of masses and are connected by a string of negligible mass passing over a frictionless pulley as shown in the figure below. The coefficient of friction between block and the horizontal surface is . When the system is released, the masses and start accelerating. What additional mass should be placed over , so that the masses slide with a uniform speed?

MEDIUM
NEET
IMPORTANT
Reason: When the body is just at the point of motion, the force of friction in this stage is called as limiting friction.

MEDIUM
NEET
IMPORTANT
Assertion: A car moving on a horizontal road may be thrown out of the road in taking a turn due to lack of proper centripetal force.
Reason: If a particle moves in a circle, describing equal angles in equal intervals of time. Then the velocity vector changes its magnitude.
