Grade upto college level Mechanics
A car has a total mass of 1820 kg. The volume of air space in the passenger compartment is 4.87 m3. The volume of the motor and front wheels is 0.750 m3, and the volume of the rear wheels, gas tank, and luggage is 0.810 m3. Water cannot enter these areas. The car is parked on a hill; the handbrake cable snaps and the car rolls down the hill into a lake; see Fig. 15-28. (a) At first, no water enters the passenger compartment. How much of the car, in cubic meters, is below the water surface with the car floating as shown? (b) As water slowly enters, the car sinks. How many cubic meters of water are in the car as it disappears below the water surface? (The car remains horizontal, owing to a heavy load in the trunk.
