Home
Class 12
PHYSICS
A block of mass m is in contact with...

A block of mass m is in contact with the cart C as shown in figure -

The coefficient of static friction between the block and the cart is `mu` , The accelertion `alpha ` of the cart that will prevent the block from failing satisfies -

A

`alpha gt (mg)/(mu)`

B

`alpha gt (g)/(mu m)`

C

`alpha ge (g)/(mu)`

D

`alpha lt (g)/(mu)`

Text Solution

Verified by Experts

The correct Answer is:
C

Here F= mg and N `m alpha ` but `f le mu N`
`mg le mu m alpha implies alpha ge (g)/(mu)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise MCQ|95 Videos

  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise PHYSICS|157 Videos

  • MOTION IN TWO AND THREE DIMENSION

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|47 Videos

  • NEET 2020

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|45 Videos

Similar Questions

Explore conceptually related problems

A block of mass m is in contact with the cart C as shown in the figure The coefficient of static friction between the block and the cart is mu . The acceleration alpha of the cart that will prevent the block from falling satisfies.

A block of mass m is in contact with the cart C as shown in the figure. The coefficient of static friction between the block and the cart is mu . The acceleration a of the cart that will prevent the block from falling satisfies: A bridge is in the from of a semi-circle of radius 40m. The greatest speed with which a motor cycle can cross the bridge without leaving the ground at the highest point is

Knowledge Check

  • Choose the most appropriate option. A block of mass mis in contact with the cart C as shown in the figure. The coefficient of static friction between the block and the cart is u. The acceleration a of the cart that will prevent the block from falling satisfies.

    A
    `alpha gt (mg)/(mu)`
    B
    `alpha gt (g)/(2mu)`
    C
    `alpha ge (g)/(mu)`
    D
    `alpha lt (g)/(mu)`

  • A block of mass m is in contact with the cart C as shown in The coefficient of static friction between the block and the cart is mu The acceleration a of the cart that will prevent the block from falling satisfies .

    A
    `agt(mg)/(mu)`
    B
    `agt(g)/(mum`
    C
    `agt(g)/(mu)`
    D
    `alt(g)/(mu)`

  • A cart of mass M has a block of mass m in contact with it as shown in the figure-2.133. The coefficient of friction between the block and the cart is mu . What is the minimum acceleration of the cart so that the block m does not fall ?

    A
    ` mu g`
    B
    `g//mu`
    C
    `mu//g`
    D
    `Mmug//m`

    • Similar Questions

    Explore conceptually related problems

    The block of mass m is in contact with a moving cart as shown in the figure.The coefficient of friction between the block and the cart is . The acceleration a of the cart that will prevent the block from falling is

    Consider the figure shown here of a moving cart C. if the coefficient of friction between the block A and the cart is mu , then calculate the minimum acceleration a of the cart C so that the block A does not fall.

    A block on table shown in is just on the edge of slipping Find the coefficient of static friction between the blocks and table .

    A block of weight 30 N is in contact with a rough wall. A force of 50 N is applied as shown in the figure. Find the coefficient of static friction between the wall and the block assuming the block is just about to slip.

    A block of mass m is placed on the top of another block of mass M as shown in the figure. The coefficient of friction between them is mu . The maximum acceleration with which the block M may move so that m also moves along with it is

    Home
    Profile