Home
Class 11
PHYSICS
A man holds a 2 kg book between his palm...

A man holds a 2 kg book between his palms so that each hand exerts the same horizontal force on the book.The coefficient of static friction between the palms and the book is 0.4 and g= 10m`s^(-2)` .If the book is prevented from falling,the least force exerted by each hand on the book is ?

Answer

Step by step text solution for A man holds a 2 kg book between his palms so that each hand exerts the same horizontal force on the book.The coefficient of static friction between the palms and the book is 0.4 and g= 10ms^(-2) .If the book is prevented from falling,the least force exerted by each hand on the book is ? by PHYSICS experts to help you in doubts & scoring excellent marks in Class 11 exams.

Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

A student holds a book of mass 2kg between his hands.Each hand exerts horizontally a force of 50N .Then the coefficient of static friction is

A boy of mass 40kg is climbing a vertical pole at a constant speed.If the coefficient of friction between his palms and the pole is 0.8 and g=10m/s^(2) ,the horizontal force that he is applying on the pole is?

Knowledge Check

  • A block of mass 2 kg, initially at rest on a horizontal floor, is now acted upon by a horizontal force of 10 N . The coefficient of friction between the block and the floor is 0.2. If g = 10 m//s^(2) , then :

    A
    The work done by the applied force in 4 s is 240 J.
    B
    The work done by the firctional force in 4s is 0,
    C
    The work done by the net forces in 4s is 0.s
    D
    The change in kinetic energy of the block in 4s is 144 J.

  • A boy of mass 40 kg is climbing on a vertical pole at a constant speed. If the coefficient of friction between his palms and the pole is 0.8 and g = 10 m//s^(2) , the horizontal force that he is applying on the pole is

    A
    300 N
    B
    400 N
    C
    500 N
    D
    600 N

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

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

    • Similar Questions

    Explore conceptually related problems

    A heavy box of mass 20 kg is pulled on a horizontal force.If the coefficient of kinetic friction between the box and the horizontal surface is 0.25, find the force of friction exerted by horizontal surface on the box.

    A block of mass 1 kg lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is 0.6. If the acceleration of the truck is 5m//s^2 , the frictional force acting on the block is…………newtons.

    In Fig. 6-37, a block of mass m = 5.0 kg is at rest on a ramp. The coefficient of static friction between the block and ramp is not known. Find the magnitude of the net force exerted by the ramp on the block.

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

    A block of mass 70 kg is kept on a rough horizontal surface and coefficient of static friction between block and surface is 0.4 . A man is trying to pull the block by applying a horizontal force .The net contact force exerted by the surface on the block is F , then:

    Home
    Profile