Home
Class 12
PHYSICS
A mass m is at rest under the action of ...

A mass m is at rest under the action of a force F. as shown in the figure, on a horizontal surface. The coefficient of friction between mass and surface is u. Then, find the correct choice(s)

A

The force of friction between the mass and surface is `Fsqrt(3)//2`

B

The force of friction between the mass and surface is `mumg`.

C

Normal force is (mg +F)

D

Normal force is (mg - F/2)

Text Solution

Verified by Experts

The correct Answer is:
A, D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • FORCE AND MOTION-II

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Linked Comprehension)|7 Videos

  • FORCE AND MOTION-II

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Matrix-Match)|3 Videos

  • FORCE AND MOTION-II

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Single Correct Choice Type)|23 Videos

  • FORCE AND MOTION - I

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Integer Type)|3 Videos

  • GAUSS' LAW

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (INTEGER TYPE)|3 Videos

Similar Questions

Explore conceptually related problems

A block of mass m is kept over another block of mass 2m and the system rests on a smooth horizontal surface. The coefficient of friction between the block is 0. 50 . Find the work done by the force of friction on the smaller block by the bigger block during a displacement the of the system when a force mg is applied to the lower block

Find the mass M in the situation shown in figure-2.212 such that m remains at rest on the front surface of M_(1) . The coefficient of friction between the front surface of M_(1) and that of m is mu .

Knowledge Check

  • A mass m rests under the action of a force F as shown in the figure-2.158 on a horizontal surface. The coefficient of friction between the mass and the surface is mu . The force of friction between the mass and the surface is :

    A
    `mumg`
    B
    `mu[mg+(F)/(2)]`
    C
    `(Fsqrt(3))/(2)`
    D
    `mu[mg-(F)/(2)]`

  • A block of mass 2 kg initially at rest moves under the action of an applied horizontal force of 6 N on a rough horizontal surface. The coefficient of friction between block and surface is 0.1. The work done by the applied force in 10 s is (Take g = 10 ms^(-2) )

    A
    200J
    B
    `-200 J`
    C
    600 J
    D
    `-600 J`

  • A force F accelerates a block of mass m on horizontal surface. The coefficient of friction between the contact surface is . The acceleration of m will be -

    A
    `(F-mumg)/M`
    B
    zero
    C
    may be (A) or (B)
    D
    None of these

    • Similar Questions

    Explore conceptually related problems

    What is the value of applied force ‘F’ which is exerted at an angle theta with the horizontal on a block of mass ‘m’ placed on a horizontal rough surface, if the coefficient of static friction between the block and the surface is , such that the block is on the verge of moving horizontally?

    A block of mass m is at rest under the action of force F against a wall as shown in the figure. Which of the following statements is incorrect?

    The block of mass 'm' initially at x=0 is acted upon by a horizontal force F=a-bx as shown in the figure. The coefficient of friction between the surfaces of contact is mu . The net work done on the block is zero if the block travels a distance of ________ .

    A block of mass m is at rest under the action of force F against a wall as shown in figure. Which of the following statement is incorrect?

    A block of mass m is stationary on a horizontal surface. It is connected with a string which has no tension. The coefficient of friction between the block and surface is m . Then , the frictional force between the block and surface is:

    Home
    Profile