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Friction General Understanding

A force of 10...

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A force of 10 N is applied on the right block of a system of two blocks of 1 kg mass each, on a rough horizontal plane. Coefficient of friction is  = 0.2 for both blocks. The spring is initially in relaxed state. Acceleration of centre of mass at initial ins†an t will be (g = 10 m/s2)

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10 N

is applied on the right block of a system of two blocks of

1 k g

mass each, on a rough horizontal plane. coefficient of friction is

μ = 0.2

for both blocks. The spring is initially in relaxed state. Acceleration of centre of mass at initial instant will be

(g = 10 m / s^{2})

Q. A box of mass 20 kg is kept on a rough horizontal surface (

μ = 0.1

). There is a spring mass system having block of mass 20 kg and spring of spring constant 100 N/m in the box. There is no friction between block and box and spring is initially relaxed. Now, an external force of 120 N is applied on the box. Find the acceleration of the box (in

m / s^{2}

) just after applying the force.

Q. Two blocks A and B of masses 10 kg and 15 kg are placed in contact with each other at rest on a rough horizontal surface as shown in the figure. The coefficient of friction between the blocks and surface is 0.2. A horizontal force of 200N is applied to block A. The acceleration of the system is
(Take g=10

m s^{- 2}

)

Q. A block of mass

10

kg is placed on rough horizontal surface whose coefficient of friction is

0.5

. If a horizontal force of

100

N is applied on it, then what will be acceleration of block?

Q. A block of mass

10 k g

is placed on a rough horizontal surface whose coefficient of friction is

0.5

. If a horizontal force of magnitude

100 N

is applied on the block, then acceleration of the block will be

[Take g = 10 m s^{- 2}]

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