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An iron block of sides 50cm xx 8cm xx 15...

An iron block of sides `50cm xx 8cm xx 15cm` has to be pushed along the floor. The force required will be minimum when the surface in contact with ground is

A

`8"cm"xx15"cm surface"`

B

`50"cm"xx15"cm surface"`

C

`8"cm"xx50"cm surface"`

D

force is same for all surface

Text Solution

Verified by Experts

The correct Answer is:
D
Force will be same for all the surfaces.
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NCERT FINGERTIPS ENGLISH-LAWS OF MOTION-Assertion And Reason
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