Solve Study Textbooks Guides

Join / Login

>>Class 11
>>Physics
>>Motion in a Straight Line
>>Acceleration
>> $The elevator shown in figure is descendi$

Question

The elevator shown in figure is descending, with an acceleration of 2 $m / s^{2}$ . The mass of the block A is 0.5 kg. The force exerted by the block A on the block B is -

1220627

A

2 N

B

4 N

C

6 N

D

8 N

Medium

Open in App

Solution

Verified by Toppr

Correct option is B)

When the elevator in descending apseudo force acts on it in the upword direction
$∴$ from free body diagram
$m = 0.5$
$g = 10$
$a = 2$
$m g - N = m a$
$N = m (g - a)$
$= 0.5 (10 - 2) = 4 N$
so the force exerted by the block $A m$ the block $B$ in $4 N$

solution

Solve any question of Motion in a Straight Line with:-

Patterns of problems

Patterns of problems

Was this answer helpful?

0

0

Similar questions

Initial acceleration of mass 2 m is

A block of 5 kg is kept on truck which start moving with constant acceleration $4 m / s e c^{2}$ as shown in figure & the block does not slide. The block is observed by two observers A and B for a time interval t=0 to t=2s observer A standing on the ground.

1321887

In the arrangement shown in the figure neglect the masses of the pulley and string and also friction. The accelerations of blocks A and B are

1212192

The spring has a force constant $24 N / m$ . The mass of the block attached = $4 k g$ . Initially the block is at rest & spring is unstretched. If a constant horizontal force of $10 N$ is applied, what is the speed of the block when it has been moved to a distance of $5 m$

A block of mass 0.05 kg when placed on a rough $1 5^{0}$ - inclined plane slides down without acceleration. The inclination is then increased to $3 0^{0}$ . What would be the acceleration of the block? g = 9.8 m $s^{- 2}$ .

View more

More From Chapter

Motion in a Straight Line

View chapter >

Revise with Concepts

Advanced Knowledge of Distance/Displacement - Time Graph

ExampleDefinitionsFormulaes

Advanced Knowledge of Velocity - Time Graph

ExampleDefinitionsFormulaes

Average and Instantaneous Acceleration

ExampleDefinitionsFormulaes

Advanced Knowledge of Acceleration

ExampleDefinitionsFormulaes

Average and Instantaneous Acceleration - Problem L1

ExampleDefinitionsFormulaes

View more

Learn with Videos

Instantaneous Acceleration and Average Acceleration

Problem on Average and Instantaneous Acceleration

Problems on Average and Instantaneous Acceleration

Displacement - Time Graph

Velocity - Time Graph - I

Velocity - Time Graph - II

Shortcuts & Tips

Problem solving tips

Problem solving tips

Common Misconceptions

Common Misconceptions

Important Diagrams

Important Diagrams

Memorization tricks

Memorization tricks

Mindmap

Cheatsheets

Practice more questions

Medium Questions