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A block of mass 5kg is lying on a rough ...

A block of mass 5kg is lying on a rough horizontal surface. The coefficient of static and kinetic friction are 0.3 and 0.1 and g=`10 ms^(-2)` The frictional force on the block is

A

25 N

B

15 N `

C

10 N

D

zero

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • A block of mass 5kg is lying on a rough horizontal surface. The coefficient of static and kinetic friction are 0.3 and 0.1 and g=10 ms^(-2) . If a horizontal force of 50 N is applied on the block, the frictional force is

    A
    25 N
    B
    5 N
    C
    10 N
    D
    Zero

  • A block of mass 5kg is lying on a rough horizontal surface. The coefficient of static and kinetic friction are 0.3 and 0.1 and g=10 ms^(2) . If a horizontal force of 50N is applied onthe block, the frictional force is

    A
    25 N
    B
    5 N
    C
    10 N
    D
    Zero

  • A block of mass 20kg is pushed with a horizontal force of 90N. If the coefficient of static & kinetic friction are 0.4 & 0.3, the frictional force acting on the block is: (g =10ms^(-2) )

    A
    90 N
    B
    80 N
    C
    60 N
    D
    30 N

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