Class 11PhysicsNewton's Laws of Motion and FrictionKinetic Friction and Motion on Rough Horizontal Surface
MediumWhat is kinetic friction? What is rolling friction?
(N/A) Kinetic friction is the resistive force that opposes the relative motion between two surfaces in contact when one surface is sliding over the other. It acts in the direction opposite to the direction of motion.
Rolling friction is the resistive force that opposes the motion of a body (like a wheel or sphere) when it rolls over a surface. It is generally much smaller than kinetic (sliding) friction because the area of contact is significantly reduced.
Rolling friction is the resistive force that opposes the motion of a body (like a wheel or sphere) when it rolls over a surface. It is generally much smaller than kinetic (sliding) friction because the area of contact is significantly reduced.
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Similar Questions
$A$ block of mass $10 \ kg$ is moving on a rough surface with a velocity $v = 4 \ m/s$ to the left. An external force $F = 20 \ N$ is applied to the right as shown in the figure. The coefficient of kinetic friction is $\mu = 0.6$. The frictional force acting on the block is ...... $N$.
Medium
View Solution$A$ body of mass $10 \,kg$ is kept on a horizontal surface. The coefficient of kinetic friction between the body and the surface is $0.5$. $A$ horizontal force of $60 \,N$ is applied on the body. The resulting acceleration of the body is about
MediumKCET 2023
View Solution$A$ boat of mass $700 \,kg$ is travelling at a speed of $24 \,ms^{-1}$ when its engine is shut off. The magnitude of frictional force $f$ between the boat and water is given by $f = 35v$, where $v$ is the speed in $ms^{-1}$ and $f$ is in newton. Find the time taken for the speed of the boat to become $6 \,ms^{-1}$. (in $\,s$)
$A$ block of mass $5 \, kg$ lies on a rough horizontal table. $A$ force of $19.6 \, N$ is enough to keep the body sliding at uniform velocity. The coefficient of sliding friction is
Easy
View Solution$A$ body of weight $64 \,N$ is pushed with just enough force to start it moving across a horizontal floor and the same force continues to act afterwards. If the coefficients of static and dynamic friction are $0.6$ and $0.4$ respectively, the acceleration of the body is (Acceleration due to gravity $= g$)
DifficultAP EAMCET 2001
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