(B) When the bag is dropped on the belt,it experiences a kinetic frictional force $f_k = \mu N = \mu mg$.This force provides an acceleration $a = f_k

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(B) When the bag is dropped on the belt,it experiences a kinetic frictional force $f_k = \mu N = \mu mg$.This force provides an acceleration $a = f_k / m = \mu g$ to the bag in the direction of the belt's motion.Given $\mu = 0.4$ and $g = 10\,m/s^2$,the acceleration is $a = 0.4 \times 10 = 4\,m/s^2$.In the frame of the belt,the initial velocity of the bag is $u = 2\,m/s$ (relative to the belt) and the final velocity is $v = 0$ (when it stops slipping).Using the equation of motion $v^2 = u^2 - 2as$ (where $s$ is the distance relative to the belt):$0^2 = 2^2 - 2(4)s$$0 = 4 - 8s$$8s = 4$$s = 0.5\,m$.

Class 11 Physics Newton's Laws of Motion and Friction Kinetic Friction and Motion on Rough Horizontal Surface

Medium

$A$ bag is gently dropped on a conveyor belt moving at a speed of $2\,m/s$. The coefficient of friction between the conveyor belt and the bag is $0.4$. Initially,the bag slips on the belt before it stops slipping due to friction. The distance travelled by the bag on the belt during the slipping motion is $.....m$. [Take $g=10\,m/s^{-2}$]

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A
$2$
B
$0.5$
C
$3.2$
D
$0.8$

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Class 11

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Chapter

Newton's Laws of Motion and Friction

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Kinetic Friction and Motion on Rough Horizontal Surface

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The blocks shown in the figure move with a constant velocity of $10 \, m/s$ towards the right. All surfaces in contact are rough. The friction force applied by the ground on block $B$ is ........ $N$.

Medium

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Which one of the following statements is correct?

Easy

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$A$ force $F$ pulls a block of mass $60 \ kg$ at a constant speed across the floor. The coefficient of friction is $\mu = 1/3$. What is the magnitude of the force $F$ (in $N$)?

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$A$ uniform chain of length $L$ is lying on a horizontal table. If the coefficient of friction between the chain and the table top is $\mu$,what is the maximum length of the chain that can hang over the edge of the table without disturbing the rest of the chain on the table?

DifficultAP EAMCET 2011

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$A$ rope of length $L$ and mass $M$ is being pulled on a rough horizontal floor by a constant horizontal force $F = Mg$. The force is acting at one end of the rope in the same direction as the length of the rope. The coefficient of kinetic friction between the rope and the floor is $1/2$. Then,the tension at the midpoint of the rope is

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The blocks shown in the figure move with a constant velocity of $10 \, m/s$ towards the right. All surfaces in contact are rough. The friction force applied by the ground on block $B$ is ........ $N$.

Which one of the following statements is correct?

$A$ force $F$ pulls a block of mass $60 \ kg$ at a constant speed across the floor. The coefficient of friction is $\mu = 1/3$. What is the magnitude of the force $F$ (in $N$)?

$A$ uniform chain of length $L$ is lying on a horizontal table. If the coefficient of friction between the chain and the table top is $\mu$,what is the maximum length of the chain that can hang over the edge of the table without disturbing the rest of the chain on the table?

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