The block of wood is 3cm on each side so it is a cube. The volume of a cube is given by s^3. So the volume of this block is 3cm x 3cm x3 cm = 27 cm^3. density = mass/volume =27 g / 27 cm^3 = 1 g/cm^3.
How do you find the volume of a block of wood?
Calculate the volume of the block of wood by multiplying length by width by height for rectangular pieces. Calculate the volume of a cylinder by dividing the diameter by two to calculate the radius. Square the radius and multiply the result by 3.14, and then multiply your product by the length.
How do you find the mass of a block?
Divide the object’s weight by the acceleration of gravity to find the mass. You’ll need to convert the weight units to Newtons. For example, 1 kg = 9.807 N. If you’re measuring the mass of an object on Earth, divide the weight in Newtons by the acceleration of gravity on Earth (9.8 meters/second2) to get mass.
What is the mass of a block?
Density has the units of mass divided by volume such as grams per centimeters cube (g/cm3) or kilograms per liter (kg/l). A block of wood has a mass of 8 g and occupies a volume of 10 cm3.
What happens to the acceleration if the mass is doubled?
The acceleration is equal to the net force divided by the mass. If the net force acting on an object doubles, its acceleration is doubled. If the mass is doubled, then acceleration will be halved.
What is the force of an object falling?
As such, all objects free fall at the same rate regardless of their mass. Because the 9.8 N/kg gravitational field at Earth’s surface causes a 9.8 m/s/s acceleration of any object placed there, we often call this ratio the acceleration of gravity.
How do you calculate the force of a punch?
Using two additional equations – P=mv (momentum = mass x velocity) and ∆P = m∆v / ∆t (change in momentum = mass x change in velocity / change in time), Dr. Foster explains that boxers should understand the force in a punch to be equal to the change in momentum (F=∆P).