pack
In German, the word 'Rucksack' is used to refer to a backpack or a knapsack. It is a compound word made up of 'Ruck' (meaning 'back') and 'Sack' (meaning 'bag'). It is commonly used to refer to a bag that is carried on one's back, typically for hiking or camping.
My backpack is heavy.
This sentence is used to express that the person's backpack has a lot of weight, probably due to many items inside it.
He is looking for his backpack.
The phrase is employed when someone is trying to locate where they have put their backpack.
Can you carry my backpack?
This is used in scenarios where a person needs assistance in carrying their backpack, likely because it is too heavy.