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Q.

Is it true that it is difficult to walk in soapy water?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
The force which opposes the movement between two surfaces in contact is the frictional force. Friction is caused due to the interlocking within the irregularities of the two surfaces. As the interlocking is more in rough surfaces, friction is on these surfaces. Hence, friction depends on the roughness of the surface. Walking on soapy water becomes challenging as soon as we begin since there is less friction between our feet and the ground.
The frictional force depends on: (i) the adhesion between body surfaces, (ii) the roughness of the surface (iii) the deformation of bodies.
 
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