On horizontal surface of a truck a block of mass 1 kg is placed (μ=0.6) and truck is moving with ac

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4-2.Friction

medium

On the horizontal surface of a truck a block of mass $1 \;kg$ is placed $(\mu=0.6)$ and truck is moving with acceleration $5\; m / sec ^2$ then the frictional force on the block will be

A$5$

B$6$

C$5.88$

D$8$

(AIPMT-2001)

Solution

$(a)$ ${F_l} = \mu mg = 0.6 \times 1 \times 9.8 = 5.88\;N$
Pseudo force on the block = $ma = 1 \times 5 = 5\;N$
Pseudo is less then limiting friction hence static force of friction $= 5\, N.$

Standard 11

Physics

Determine the maximum acceleration in $m/s^2$ of the train in which a box lying on its floor will remain stationary, given that the co-efficient of static friction between the box and the train’s floor is $0.15.$

easy

Imagine $a$ situation in which the horizontal surface of block $M_0$ is smooth and its vertical surface is rough with $a$ coefficient of friction $\mu$ In above problem, the value $(s)$ of $F$ for which $M$ and $m$ are stationary with respect to $M_0 mg$

normal

In the arrangement shown in the figure, mass of the block $B$ and $A$ is $2\,m$ and $m$ respectively. Surface between $B$ and floor is smooth. The block $B$ is connected to the block $C$ by means of a string pulley system. If the whole system is released, then find the minimum value of mass of block $C$ so that block $A$ remains stationary w.r.t. $B$. Coefficient of friction between $A$ and $B$ is $\mu$.

hard

Consider the system shown below. A horizontal force $F$ is applied to a block $X$ of mass $8 \,kg$, such that the block $Y$ of mass $2 \,kg$ adjacent to it does not slip downwards under gravity. There is no friction between the horizontal plane and the base of the block $X$. The coefficient of friction between the surfaces of blocks $X$ and $Y$ is $0.5$. The minimum value of $F$ is ………… $N$ (take, acceleration due to gravity to be $10 \,ms ^{-2}$ )

medium

(KVPY-2014)

In the given arrangement the maximum value of $F$ for which there is no relative motion between the blocks

medium

On the horizontal surface of a truck a block of mass $1 \;kg$ is placed $(\mu=0.6)$ and truck is moving with acceleration $5\; m / sec ^2$ then the frictional force on the block will be

Solution

Similar Questions

Determine the maximum acceleration in $m/s^2$ of the train in which a box lying on its floor will remain stationary, given that the co-efficient of static friction between the box and the train’s floor is $0.15.$

Imagine $a$ situation in which the horizontal surface of block $M_0$ is smooth and its vertical surface is rough with $a$ coefficient of friction $\mu$ In above problem, the value $(s)$ of $F$ for which $M$ and $m$ are stationary with respect to $M_0 mg$

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