Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Edge of metal cube = 5 cm.
Density of the metal cube = 9 gcm-3 = 9 × 103 kgm-3.
Volume of the metal cube = 125 cm3 = 125 × 10-6 m3.
Mass of the metal cube =9 × 103 ×125 × 10-6 = 1125 × 10-3 =1.125 kg.
Weight of the liquid = mass × gravity = 1.125 × 10 = 11.25 N.
Density of liquid = 1.2 gcm-3= 1.2 × 103 kgm-3.
Upthrust of the liquid = V × p × g.
Upthrust = 125 × 10-6 × 1.2 × 103 × 10 = 1.5 N.
The apparent weight of the body = weight of liquid - upthrust
Apparent weight = 11.25 N - 1.5 N = 9.75 N
Tension in the string is equal to the apparent weight of the body
So, the tension in the string would be 9.75 N.
APPEARS IN
संबंधित प्रश्न
Complete the following sentence :
An empty tin container with its mouth closed has an average density equal to that of a liquid. The container is taken 2 m below the surface of that liquid and is left there. Then the container will ____________ .
A bunch of feathers and a stone of the same mass are released simultaneously in air. Which will fall faster and why? How will your observation be different if they are released simultaneously in vacuum?
What are the units density in (i) C.G.S. and (ii) S.I. system .
Express the relationship between the C.G.S. and S.I. units of density.
A body floats in a liquid with a part of it submerged inside the liquid. Is the weight of floating body greater than, equal to or less than the upthrust?
A rubber ball floats on water with its 1/3rd volume outside water. What is the density of rubber?
A cork cut in the form of a cylinder floats in alcohol of density 0.8 gcm-3, such that 3/4 of its length is outside alcohol. If the total length of the cylinder is 35 cm and area of cross-section 25 cm2, calculate:
(1) density of cork
(2) wt. of cork
(3) extra force required to submerge it in alcohol
A trawler is fully loaded in sea water to maximum capacity. What will happen to this trawler, if moved to river water? Explain your answer.
Select the correct option:
A body has density 9.6 gcm -3. Its density in SI system is:
