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Standard IX

Physics

Weight and Mass of a Body

A block of ma...

Question

A block of mass $2 k g$ is hanging with two identical massless springs as shown in figure. The acceleration of the block just at the moment, the right spring breaks is ( $g = 10 m / s^{2}$ ):

10 m / s^{2}

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5 m / s^{2}

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25 m / s^{2}

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4 m / s^{2}

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Solution

The correct option is A $10 m / s^{2}$
from the diagram
$2 T c o s 60^{0} = 20 N$
$T = 20 N$
acceleration of the block $a = \frac{T}{M} = \frac{20}{2} = 10 \frac{m}{s^{2}}$

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A block of mass 2kg is hanging with two identical massless springs as shown in figure. The acceleration of the block just at the moment, the right spring breaks is (g=10m/s2):

The correct option is A 10m/s2from the diagram 2Tcos600=20NT=20Nacceleration of the block a=TM=202=10ms2

A block of mass $2 k g$ is hanging with two identical massless springs as shown in figure. The acceleration of the block just at the moment, the right spring breaks is ( $g = 10 m / s^{2}$ ):

The correct option is A $10 m / s^{2}$
from the diagram
$2 T c o s 60^{0} = 20 N$
$T = 20 N$
acceleration of the block $a = \frac{T}{M} = \frac{20}{2} = 10 \frac{m}{s^{2}}$