Compression.
APEX :)
Magnetic Force
The force is tension.
Tension
Tension
The idea is to distribute the weight among many nails. Thus, the force exerted by each individual nail is relatively small.
Magnetic Force
A person can lie down on a bed of nails as the bed is large and the force is distributed evenly on the bed. Thus, making a much smaller pressure.
The force is tension.
Tension
Tension
In theory, a person could lie on a bed of nails indefinitely - the force of the body is distributed over the entire bed so there is no risk of injury from the nails. The limiting factors would be biological necessity (need to go to the bathroom, need for food/water, etc.) and the development of bed sores over several days.
tell her its her bed
bed
No! Its never ok to lie in a tanning bed. It will eventually give you skin cancer!
Mattress.
The present tense is lay.
Yes, when he got into bed!