Physics Home Assignment
A force of 100 N is applied to an object of area 2 m2. Calculate the pressure.
A rectangular wooden block has mass of 4 kg. The length, breadth and height of this wooden block are 50 cm, 25 cm and 10 cm, respectively. Find the pressure on the table top :
When the wooden block is kept with its surface measuring 50 cm x 25 cm on the table.
When the wooden block is kept with its surface measuring 25 cm x 10 cm on the table.
(Assume: Acceleration due to gravity, g = 10 m/s2)
When an aluminium object is immersed in water, it displaces 5 kg of water. How much is the buoyant force acting on the aluminium object in Newton? (g = 10 m/s2)
When a boat is partially immersed in water, it displaces 600 kg of water. How much is the buoyant force acting on the boat in Newton? (g = 10 m s-2)
An object of weight 200 N is floating in a liquid. What is the magnitude of buoyant force acting on it?
A floating boat displaces water weighing 6000 Newton.
What is the buoyant force on the boat?
What is the weight of the boat?
The density of a body is 800 kg/m3. Will it sink or float when dipped in a bucket of water?
( Density of Water = 1000 kg/m3)
The mass of 2 m3 of steel is 15600 kg. Calculate the density of steel in SI units.
An object of mass 50 g has a volume of 20 cm3. Calculate the density of the object. If the density of water be 1 g/cm3, state whether the object will float or sink in water.
The volume of a solid of mass 500 g is 350 cm3
What will be the density of this solid?
What will be the mass of the water displaced by this solid?
What will be the relative density of the solid?
Will it float or sink in water?
The density of turpentine is 840 kg/m3. What will be its relative density?
(Density of water = 1000 kg/m3)
What is the density of a substance of mass 100 g and volume 10 cm3?
Calculate the density of an object of volume 3 m3 and mass 9kg. State whether this object will float or sink in water. Give reason for your answer.
The density of gold is 19 g/cm3. Find the volume of 95 g of gold.
What is the mass of 5 m3 of cement of density 3000 kg/m3?