question archive Concrete mixture is made by mixing cement , stone and sand in a rotating cylindrical drum,If the drum rotates too fast,the ingredients remain struck to the wall of the drum and proper mixing of the ingredients does not take place
Subject:MathPrice: Bought3
Concrete mixture is made by mixing cement , stone and sand in a rotating cylindrical drum,If the drum rotates too fast,the ingredients remain struck to the wall of the drum and proper mixing of the ingredients does not take place.The maximum rpm to ensure proper mixing is close to?(take the radius of the drum to be 1.25 m and its axis horizontal)OPTIONSa)1.3 b)0.4 c)27.0 d)8.0