Home
Class 11
PHYSICS
A body of mass 60kg is pushed with just ...

A body of mass 60kg is pushed with just enough force to start it moving on a rough surface with `mu_(s)= 0.5 and mu_(k) =0.4` and the force continues to act afterwards. The acceleration of the body is (in `m//sec^(2)`)

A

0.98

B

3.92

C

4.9

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
A
`F_(R)=f_(s)-f_(k), a=(mu_(s)-mu_(k))g`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • LAW OF MOTION

    NARAYNA|Exercise EXERCISE - I (H.W)(MOTION ON A HORIZONTAL ROUGH SURFACE)|6 Videos

  • LAW OF MOTION

    NARAYNA|Exercise EXERCISE - I (H.W)(MOTION OF A BODY ON THE INCLINED PLANE)|5 Videos

  • LAW OF MOTION

    NARAYNA|Exercise EXERCISE - I (H.W)(LAW OF CONSERVATION OF MOMENTUM)|3 Videos

  • KINETIC THEORY OF GASES

    NARAYNA|Exercise LEVEL-III(C.W)|52 Videos

  • MATHEMATICAL REVIEW & PHYSICAL WORLD

    NARAYNA|Exercise C.U.Q|13 Videos

Similar Questions

Explore conceptually related problems

Block B is kept on Block A and a force F = 50 N pushes B down as shown in figure. Block A is kept on a rough surface with mu_(s)=0.2 and mu_(k)=0.1 . What is the maximum force f_(2) which can be applied so that the system remains at rest?

A 60kg is pushed horizontaly with just enough force to start it moving across a floor and the same force continues to act afterwards. The coefficient of static friction and sliding friction are 0.5and 0.4 respectively the accleration of the body is

Knowledge Check

  • A body of mass 40 kg resting on a rough horizontal surface is subjected to a force F which is just enough to start the motion of the body. If mu_s, = 0.5, mu_k = 0.4 and the force F is continuously applied on the body, then the acceleration of the body is (Take g = 10 ms^(-2) )

    A
    zero
    B
    `1 ms^(-2)`
    C
    `2 ms^(-2)`
    D
    `2.4 ms^(-2)`

  • A body of weight 64 N is pushed with just enough force to start it moving across a horizontal floor and the same force continues to act afterwards. If the coefficients of static and dynamic friction are 0.6 and 0.4 respectively, the acceleration of the body will be (Acceleration due to gravity = g)

    A
    `(g)/(6.4)`
    B
    0.64 g
    C
    `(g)/(32)`
    D
    0.2 g

  • A 60 kg body is pushed with just enough force to start it moving across a floor and the same force continues to act afterwards. The coefficient of static friction and sliding friction are 0.5 and 0.4 respectively. The acceleration of the body is

    A
    `6(m)/(s^2)`
    B
    `4.9(m)/(s^2)`
    C
    `3.92(m)/(s^2)`
    D
    `1(m)/(s^20`

    • Similar Questions

    Explore conceptually related problems

    A body of mass 60 kg is dragged with just enough force to start moving on a rough surface with coefficient of static and kinetic frictions 0.5 and 0.4 respectively . On applying the same force , what is the acceleration ?

    A 60 kg body is pushed with just enough force to start it moving across a floor and consider that the same force continues to act afterwards. Given that the coefficient of static friction and sliding friction are 0.5 and 0.4 respectively. What is the acceleration of the body?

    A body of mass 40kg resting on a rough horizontal surface is subjected to a force P which is just enough to start the motion of the body. If mu_(s)=0.5mu_(k)=0.4 , g=10ms^(-2) an dthe force P is continuously applied on the body, then the accceleration of the body is.

    An object of 5 kg is placed on rough surface whose mu_k=0.3 and mu_s=0.4 . What is the minimum force required to start movement in 5 kg?

    A horizontal force, just sufficient to move a body of mass 4 kg lying on a rough horizontal surface, is applied on it. The coefficients of static and kinetic friction between the body and the surface are 0.8 and 0.6 respectively. If the force continues to act even after the block has started moving, the acceleration of the block in ms- is (Take g = 10 m s^(-2) )

    Home
    Profile