friction always acts to oppose any relative motion between surfaces. if we push on the book with a force of less than 5N , the book wont move, because the frictional force will exactly balance the force we apply.
friction always acts to oppose any relative motion between surfaces. if we push on the book with a force of less than 5N , the book wont move, because the frictional force will exactly balance the force we apply
In most insects the male reproductive system is formed by one pair of testes linked to a seminal vesicle by vasa deferentia, accessory glands and an ejaculatory duct.
