Why Objects Float or Sink

Q. A cube of side 10 cm completely immersed in water experiences a buoyant force of 1000 N. $g=10m/s^2$

1. True
2. False

Q.

A body floats or sinks due to difference in their:

1. Masses

2. Densities

3. Pressures

4. None of these

Q. Question 20
Why does a block of plastic released under water come up to the surface of water?

Q. Which of the following conditions is true for a sinking body?

1. Buoyancy = Weight of the body
2. Buoyancy > Weight of the body
3. Weight of the displaced liquid < Weight of the body
4. Weight of the displaced liquid > Weight of the body

Q.

In which direction does the buoyant force due to a liquid act?

1. Upward

2. In the direction of weight

3. Can't be determined

4. Downward

Q. An object of mass $100g$ has a volume of $20c{m}^3$. Calculate the density of the object. Also, state whether the object will float or sink in water.

1. $5.0gc{m}^{-3},sink$
2. $2.0gc{m}^{-3},float$
3. $5gc{m}^{-3},float$
4. $1.0gc{m}^{-3},sink$

Q. Which of the following conditions is true for a sinking body?

1. Weight of the displaced liquid > Weight of the body
2. Buoyancy = Weight of the body
3. Buoyancy > Weight of the body
4. Weight of the displaced liquid < Weight of the body

Q. A cube of side 10 cm completely immersed in water experiences a buoyant force of 1000 N. $g=10m/s^2$

1. True
2. False

Q. Question 20
Why does a block of plastic released under water come up to the surface of water?

Q.

A body floats or sinks due to difference in their:

1. Densities

2. Pressures

3. Masses

4. None of these