Question

An iron cube of mass 480g and density 8g/cm³ is suspended by a string so that it is half immersed in oil of density 0.9g/cm³ calculate the upthrust on cube

Answer 1

Refer to the file attached below.

Hope my answer is correct.

Answer 2

Answer:

Explanation:

480/8) = volume of 60cc., so it will displace (60/2) = 30cc. of oil when half immersed.

(30 x 0.9) = mass of 27g. oil displaced.

(480g - 27g) = 453g., or 0.453kg.

(0.453 x 9.8) = tension of 4.4N. in string.