Question

Какая сила тяжести действует на медный брусок размером 10*5*8см?

Answer 1

F = m * g 

m - масса 
g - ускорение свободного падения ( 10 Н / кг ) 

m = p * V 

p - плотность ( для меди 8900 кг / м³ ) 
V - объём ( a * b * c = 0,1 * 0,05 * 0,08 = 0,0004 м³ ) 

m = 8900 * 0,0004 = 3,56 кг 

F = 3,56 * 10 = 35,6 H

Answer 2

Calculating the Force of Gravity on a Copper Block

To calculate the force of gravity acting on a copper block, we can use the formula:

F = m * g

Where: - F is the force of gravity - m is the mass of the object - g is the acceleration due to gravity

Mass of the Copper Block

The mass of the copper block can be calculated using the formula:

m = ρ * V

Where: - m is the mass - ρ is the density of copper - V is the volume of the copper block

From the given dimensions (10*5*8 cm), the volume of the copper block is: V = 10 cm * 5 cm * 8 cm = 400 cm³

The density of copper is approximately 8.96 g/cm³.

So, the mass of the copper block is: m = 8.96 g/cm³ * 400 cm³ = 3584 g = 3.584 kg

Acceleration Due to Gravity

The acceleration due to gravity, g, is approximately 9.8 m/s² on the surface of the Earth.

Calculating the Force of Gravity

Now, we can calculate the force of gravity using the formula:

F = m * g F = 3.584 kg * 9.8 m/s² = 35.1392 N

Therefore, the force of gravity acting on the copper block is approximately 35.1392 Newtons.