3) As shown on the right, a vertical

piston-cylinder assembly containing a gas

is placed on a hot plate. The piston

initially rests on the stops. With the onset

of heating, the gas pressure increases. At

what pressure, in bar, does the piston

start rising? The piston moves smoothly

in the cylinder and g = 9.81 m/s².

Stops

Patm = 1 bar

Piston

Gas

- m = 50 kg

A = 0.01 m²

Hot plate