The apparatus shown in the figure below was used by Joule to measure the mechanical equivalent of heat. Work is done on
Posted: Fri May 06, 2022 11:17 am
The apparatus shown in the figure below was used by Joule to
measure the mechanical equivalent of heat. Work is done on the
water by a rotating paddle wheel, which is driven by two blocks
falling at a constant speed. The temperature of the stirred water
increases due to friction between the water and the paddles. If the
energy lost in the bearings and through the walls is neglected,
then the loss in potential energy associated with the blocks equals
the work done by the paddle wheel on the water. If each block has a
mass of 1.60 kg and the insulated tank is filled
with 200 g of water, what is the increase in temperature
of the water (in °C) after the blocks fall through a distance
of 2.45 m?
°C
measure the mechanical equivalent of heat. Work is done on the
water by a rotating paddle wheel, which is driven by two blocks
falling at a constant speed. The temperature of the stirred water
increases due to friction between the water and the paddles. If the
energy lost in the bearings and through the walls is neglected,
then the loss in potential energy associated with the blocks equals
the work done by the paddle wheel on the water. If each block has a
mass of 1.60 kg and the insulated tank is filled
with 200 g of water, what is the increase in temperature
of the water (in °C) after the blocks fall through a distance
of 2.45 m?
°C