Concrete mixture is made by mixing cement,stone and sand in a rotating cylindrical drum. If the drum rotates too fast,the ingredients remain stuck to the wall of te drum and proper mixing of the ingredients does not take place. The maximum rotational speed of the drum in revolutions per minute(rpm) to ensure proper mixing is close to (Take the radius of the deum to be 1.25m and its axle to be horizontal

Concrete mixture is made by mixing cement,stone and sand in a rotatin

1.	Concrete mixture is made by mixing cement,stone and sand in a rotating cylindrical drum. If the drum rotates too fast,the ingredients remain stuck to the wall of te drum and proper mixing of the ingredients does not take place. The maximum rotational speed of the drum in revolutions per minute(rpm) to ensure proper mixing is close to (Take the radius of the deum to be 1.25m and its axle to be horizontal
Answer» Concrete mixture is made by mixing cement,stone and sand in a rotating cylindrical drum. If the drum rotates too fast,the ingredients remain stuck to the wall of te drum and proper mixing of the ingredients does not take place. The maximum rotational speed of the drum in revolutions per minute(rpm) to ensure proper mixing is close to (Take the radius of the deum to be 1.25m and its axle to be horizontal