Force of friction cannot be reduced by increasing the weight of the body because increasing weight increases the interlocking between the two surfaces in contact.
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Air friction can be reduced by making the shape of the objects
Air friction can be reduced by "_______" the shape of the objects.
Hydrogen cannot reduce
Statement I: The coefficient of friction can be greater than unity. Statement II: The force of friction is dependent on normal reaction and the ration of force of friction and normal reaction cannot exceed unity.
