Home
Class 11
PHYSICS
A block of mass 'm' is placed on the rou...

A block of mass 'm' is placed on the rough floor of lift. Lift may have any magnitude of acceleration either in upward direction (or) down ward direction. The minimum friction will be

A

10N

B

5N

C

zero

D

15N

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • FRICTION

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-I) (LEVEL-II) (STRAIGHT OBJECTIVE TYPE QUESTIONS)|6 Videos

  • FRICTION

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-I) (LEVEL-II) (INTEGER TYPE QUESTIONS)|4 Videos

  • FRICTION

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE- IV (INTEGER TYPE QUESTIONS)|1 Videos

  • FLUID MECHANICS

    AAKASH SERIES|Exercise Questions for Descriptive Answers|14 Videos

  • GAUSS.S LAW

    AAKASH SERIES|Exercise PROBLEMS (LEVEL - II)|12 Videos

Similar Questions

Explore conceptually related problems

A person of mass m is on the the floor of a lift. The lift is moving down with an acceleration 'a'. Then : (a) the net force is acting in downward direction and is equal to mg (b) the force mg must be greater than reaction force (c ) the man appears to be lighter than his true weight by a factor (a/g)

A block of mass 'm' is placed on the floor of a lift, moving upward with an uniform acceleration a = g. ( mu is the coefficient of friction between block and the floor of lift). If a horizontal force of umg acts on the block, then horizontal acceleration of the body is .......

A person of mass m is on the floor of a lift. The lift is moving down with an acceleration 'a'. Then : a) the net force is acting in downward direction and is equal to mg b) the force mg must be greater than reaction force c) the man appears to be lighter than his true weight by a factor (a/g)

A block of mass'm' is resting on the floor of a lift. The coefficient of friction between the block and the floor is mu . When the lift is falling freely, the limiting frictional force between block and surface is

A lift of mass 1000 kg moves up with an acceleration 1 ms^(-1) in upward direction. Find the tension developed in supporting string.