• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

PHYSICS IGCSE PRESSURE QUESTION

Messages
2
Reaction score
1
Points
13
Hey guys! please helppp, the question says
The block is lowered so that it rests on the sea bed.
The answer gives "becomes smaller, or zero"

Can someone pls explain whyy :( wouldnt it increase? bc when u move it down, the pressure increase, and it has to have no resultant force for the block to be in place , so shouldnt the tension of spring increase? why does it decrease..
 

Attachments

  • image.jpg
    image.jpg
    2.2 MB · Views: 21
Messages
933
Reaction score
2,272
Points
253
Ohhh, so if they just say it moves down (not resting), the tension will increase rightt bc more pressure? :eek: thank u!!
Why do you confuse yourself with pressure here

A stretched rope or spring pulls at both ends as it tries to reduce its length back to normal....the pull of the string or spring is called its tension

The tension force is in the cable holding the box, and was there because the box was hanging... now that it is in rest and is supported by the ground the tension goes
e.g if you hang an eraser with string ,the string , the string pulls on the eraser it has tension. But when you rest the eraser on a table, the string is a bit slack as there is less tension
 
Top