The cylindrical driving bell whose length is 1.5m is lowered to the bottom of a tank.assume the atmospheric pressure at the surface as equivalent to 1000 cm of water and the temperature as constant

To calculate the pressure at the bottom of the tank, we need to consider the hydrostatic pressure due to the weight of the water above it. The formula for hydrostatic pressure is:

P = ρgh

Where:
P is the pressure,
ρ (rho) is the density of the fluid,
g is the acceleration due to gravity, and
h is the height of the fluid column.

Given that the height of the tank is not specified, we need more information to calculate the pressure at the bottom accurately. However, we can still provide an explanation of the concept.

The atmospheric pressure at the surface can be converted from 1000 cm of water to standard units such as Pascal (Pa) to be used in the calculation. The conversion factor is 1 cm of water = 9806.65 Pa.

To convert the atmospheric pressure from 1000 cm of water to Pascal:
1000 cm of water * 9806.65 Pa/cm = 9806650 Pa

In addition to the surface pressure, the pressure at the bottom of the tank includes the hydrostatic pressure due to the weight of the water column above it.

The temperature being constant usually doesn't affect the pressure calculation unless it has an impact on the water density. However, that is usually not the case unless the temperature is extremely high.

To accurately calculate the pressure at the bottom of the tank, we need to know the height (h) of the tank or the depth at which the cylindrical driving bell is lowered. Please provide those details so that we can continue with the calculation.