A block of mass 1 kg lying on floor is subjected to a horizontal force given by F -2 sin- The coefficient of friction between the block and the floor is 0-25A- acceleration of block depends on value of -B- frictional force of magnitude 2-5 N acts at all time-C- acceleration of the block is positive and uniformD- The block always remains at rest

The correct option is D The block always remains at restf_lim=μ Mg =2.5 N F lt; f_lim So block will be at rest. ...

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Standard XII

Physics

Angle of Repose

A block of ma...

Question

A block of mass 1 kg lying on floor is subjected to a horizontal force given by $F = 2 s i n ω t .$ The coefficient of friction between the block and the floor is 0.25

acceleration of the block is positive and uniform

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acceleration of block depends on value of

ω

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The block always remains at rest

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frictional force of magnitude 2.5 N acts at all time.

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Solution

The correct option is C The block always remains at rest
$f_{l i m} = μ M g = 2.5 N F < f_{l i m}$
So block will be at rest.

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A block of mass 1 kg lying on floor is subjected to a horizontal force given by F=2sinωt. The coefficient of friction between the block and the floor is 0.25

The correct option is C The block always remains at restflim=μMg=2.5NF<flim So block will be at rest.

A block of mass 1 kg lying on floor is subjected to a horizontal force given by $F = 2 s i n ω t .$ The coefficient of friction between the block and the floor is 0.25

The correct option is C The block always remains at rest
$f_{l i m} = μ M g = 2.5 N F < f_{l i m}$
So block will be at rest.