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Which of the following forces does not act on ore particles in a ball mill?

Which of the following forces does not act on ore particles in a ball mill? Correct Answer Tension force

In a ball mill, the ore particles are subjected to forces like Cataracting, cascading, interparticle collisions, rubbing and frictional forces but not tension force.

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Which of the following statements are true with respect to iron ore?
I. Limestone and coal are important for smelting iron ore
II. More than 20% of the world iron ore deposits are in India
III. Odisha and Jharkhand top in the production of iron ore
IV. Iran is the largest buyer of Indian iron ore
The following information is provided for an ore deposit:
Number of waste blocks = 10
Number of ore blocks = 5
Volume of each waste block, m3 = 600
Total cost of waste handling per m3 = Rs. 100
Tonnage of each ore block = 400
Total cost of ore handling per ton = Rs. 150
Sale price of ore per ton = Rs. 500
The net cash flow of mining the deposit in lakhs of rupees, is
Which of the following statements represent Mill's position?
1. Mill does not accept the qualitative distinction of happiness
2. Mill regards health, honour and wealth as intrinsic values
3. Mill's theory is altruistic hedonism and qualitative utilitarianism
In which case the following observation was made by Justice Hankford: "Damnum may be abseque injuria, as if I have a mill and my neighbour builds another mill whereby the profit of my mill is diminished. I shall have no action against him, although I am damaged . . . . . . . . but if a miller disturbs the water from going to my mill, or does any nuisance of the like sort, I shall have such action as the law gives".
Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill )
For achieving maximum capacity of the ball mill, the ball charge should be equal to about __________ percent of the ball mill volume.