Force required to immerse a wooden cube

  • Thread starter Jahnavi
  • Start date
  • #1
848
102

Homework Statement



The force required to immerse a wooden
cube of side 4 cm and relative density RD 0.5 completely in water is
1) 16x10-3 kgwt
2) 32x10-3 kgwt
3) 64x10-3 kgwt
4) 128x10-3 kgwt

Homework Equations




The Attempt at a Solution



Density of the cube = 0.5 gcm-3
Volume of cube = 64 cm3
Weight of the cube = 64 x10-6 x 500 x 9.8 N (1)

Upthrust = 64 x10-6 x 1000 x 9.8 N (2)

Force required = Upthrust - Weight

Subtracting (1) from (2)

Force required = 64 x10-6 x 500 x 9.8 N

1kgwt = 9.8 N

Force required = 32 x10-3 kgwt

Is option 2) the correct answer ?
 

Answers and Replies

  • #2
scottdave
Science Advisor
Homework Helper
Insights Author
1,801
753
it looks good to me.
 
  • Like
Likes Jahnavi

Related Threads on Force required to immerse a wooden cube

Replies
18
Views
769
Replies
4
Views
527
  • Last Post
Replies
5
Views
6K
  • Last Post
Replies
1
Views
2K
Replies
10
Views
19K
Replies
5
Views
2K
  • Last Post
Replies
7
Views
4K
  • Last Post
Replies
4
Views
23K
  • Last Post
Replies
8
Views
11K
Top