You don't "have to" weigh any particular weight. However medical people have created tables to show what are average weights for different people and what weights are considered healthy.
These depend on age, height and gender.
They weigh about 5-10 lbs
About 10 pounds.
800 US quarters weigh 10 pounds.
They weigh approximately 10 pounds.
The green plates weigh 10 pounds each.
The red plates weigh 10 pounds each.
10 pounds of 20p coins would weigh approximately 2.72 kilograms.
10 pounds
84
10 stone
10 GRAMS
10 lbs