Archimedes Principle

Describe an application where having a material that is much less dense than steel would be useful.

A hollow metal sphere has a volume of $50 {\mathrm{cm}}^3$, it has a mass of $40 \mathrm{g}$. It is placed in water which has a density of $1 \mathrm{g}/{\mathrm{cm}}^3$. Which statement best explains what happen?

The table gives the masses, volumes, and densities of some objects.

By calculating the missing values in the table find out which object is the largest.

The table gives the masses, volumes, and densities of some objects.

By calculating the missing values in the table find out which objects will float in the air?

The table gives the masses, volumes, and densities of some objects.

By calculating the missing values in the table find out which objects will float on water?

The table gives the masses, volumes, and densities of some objects.

By calculating the missing values in the table find out which object is the lightest.

The picture below shows how to measure the density of an object. At first, there is $35 {\mathrm{cm}}^3$ of water in the measuring cylinder. When the bolt is added to the measuring cylinder, the water level rises to $39 {\mathrm{cm}}^3$. The mass of the bolt is $29.5 \mathrm{g}$. What is the density of the bolt.

A Plank of wood is 3 cm thick,16 cm wide, and 75 cm long.

Another block of wood has a mass of 384 g and is a cube of a side length of 8 cm. Is this a block of wood more or less dense than the first plank of wood (Density =$500 \mathrm{kg}/{\mathrm{m}}^3$)?

A Plank of wood is 3 cm thick,16 cm wide, and 75 cm long.

The plank of wood has a mass of 1,800 g. calculate the density of the wood.

Following question contain four steps. Fill in the blank on right side according to left side step.

If ${\mathrm{W}}_1 \mathrm{and} {\mathrm{W}}_2$ are respectively, the weight and buoyant force of an object, then:

$\mathrm{W}{ }_1<\mathrm{W}{ }_{2 }$: The object will float :: ${\mathrm{W}}_1 >{\mathrm{W}}_2$: _____

Following question contain four steps. Fill in the blank on right side according to left side step.

Area: square meter :: Volume: _____

What is Archimedes' principle?

 What is upthrust? On its basis explain the principle of floatation.

The force that keeps an object floating in water.

If a container with dimensions $1 \mathrm{meter}$ length, $1 \mathrm{meter}$ width, and $1 \mathrm{meter}$ height is completely  filled by mercury then the weight of mercury in the vessel will be,

(Assume that the mass of mercury is equal to the weight of mercury. The density of Mercury$= 13600 \mathrm{kg}/{\mathrm{m}}^3$. )

If upthrust upon a body is less than the weight of body when it is fully immersed into water, then

What is the formula of density?

Two blocks, one of iron and other of wood are immersed in water at the same depth. Which will come upward and why ?

Apparent weight = _____ of body in the air – Thrust force.

(Choose from the following: Weight / Mass)

_____ principle in applied in ship designing.