WorksheetsChapter 3 Forces & Pressure
Total questions: 60
Worksheet time: 54mins
Diagram 7 shows sole of a golf shoe.
What is the physics concept involved in the above situation?
Force
Presure
Force in equilibrium
Transmission of pressure
Diagram 8 shows water spurts out from a container.
The observation shows that
the smaller the volume of water, the greater the pressure
the greater the volume of water, the greater the pressure
the greater the depth of water, fr, the greater the pressure
the smaller the depth of water, h, the greater the pressure
Diagram 9 shows a student pumps a balloon.
Which of the following uses the same principle as above?
Hydrometer
Pressing a tooth paste
Box floating in water
Pressing thumbtack into a board
Diagram 10 shows a hydraulic jack.
Which modification on piston P will increase the pressure in piston Q?
Decrease the height, h
Decrease the volume of oil
Decrease the cross-sectional area
Decrease the thickness of the wall
Diagram 11 shows a Plimsoll line marked on the side of a ship.
The Plimsoll line is used as a reference line to prevent overloading.
The Plimsoll line is marked based on
Pascal's Principle
Bernoulli's Principle
Archimedes Principle
Principle of Conservation of Momentum
Diagram 12 shows a long glass tube full of mercury is inverted vertically and dipped into mercury.
Which point A, B, C or D, has a pressure equals to the atmospheric pressure?
A
B
C
D
Diagram 13 shows a top view of a sailboat sailing against the direction of wind.
Which direction A, B, C or D, the lift force acting on the sail?
A
B
C
D
Diagram 7 shows force F1 exerted on a small piston producing pressure P1. Pressure P1is transferred to the large piston to produce pressure P2 and force F2.
Which comparison is correct?
F1= F2
F1> F2
P1= P2
P1= >P2
Diagram 8 shows an apparatus set-up to measure pressure in liquid.
What happens to the height of water h. if the thistle funnel is lowered from level
P to Q?
Increases
Decreases
No change
Diagram 9 shows a man standing on one leg. His weight is 720 N and the surface area of his shoe is 0.02 m2.
What is the pressure exerted by the man?
14.4 Pa
28.8 Pa
18000 Pa
36000 Pa
Diagram l0 shows a manometer is connected to gas supply.
Which comparison about the pressure at X, Y or Z is correct?
Px = PY
Px > PY
PY = Pz
PY > Pz
Diagram 11 shows the apparatus to measure water pressure. What is the water pressure at X?
71.2cm Hg
75.0cm Hg
78.8cm Hg
82.6cm Hg
Which instrument is used to measure atmospheric pressure?
Hydrometer
Bourdon gauge
Barometer
Micrometer screw gauge
A rubber ball is dropped into the water. The ball sinks and moves upward after reaching a certain depth.
Which pair is correct to show the relationship between buoyant force and weight?
A
B
C
D
Which equipment works based on the Bemoulli's principle?
Suction pump
Bunsen bumer
Vacuum cleaner
Hydraulic jack
Diagram 4 shows a duck. The duck feet do not sink when walking on soft ground.
What physics concept describes the situation?
Pressure
Inertia
Momentum
Bouyant force
Diagram 8 shows a simple pressure gauge connected to a thistle funnel. The thistle funnel is immersed in a vessel containing water at height, h from the bottom of the vessel.
What happens to the reading of the pressure gauge if the funnel is lowered into the water?
increases
decreases
remain constant
Diagram 9 shows three manometers connected to three gas containers.
Which comparison is correct?
Pressure of Z > Pressure of X > Pressure of Y
Pressure of X = Pressure of Y < Pressure of Z
Pressure of X > Pressure of Y > Pressure of Z
Pressure of Y > Pressure of Z > Pressure of X
Diagram 10 shows Farhan in a water tank where he is weighed while completely submerged. His weight is 1000 N in air and his body volume is 0.08 m3.
Water density = 1000 kg m-3
What is his apparent weight when he is completely submerged in water?
80 N
200 N
800 N
920 N
Diagram 11 shows Faris is lying on an air mattress. With the mattress he can ignore the rock and sticks that are on the ground beneath him.
The air mattress takes advantage of
Boyle’s law
Pressure law
Pascal’s principle
Archimedes principle
What instrument is used for measuring the low gas pressure?
Barometer
Altimeter
Manometer
Bourdon gauge
Diagram 12(a) shows normal airway for a non snoring person. The nasal and oral
airways are open (X).
Diagram 12(b) shows the airways for a snoring person. The uvula and the soft palate
partially block the airway (Y) increasing airflow through the narrowed areas in the hollow tube, which causes a drop in the pressure at that point.
This phenomena is explained by
Boyle’s law
Pressure law
Pascal’s principle
Bernoulli’s principle
When the gas in air-tight container is compressed, what will remains unchanged?
The gas pressure.
The number of particles.
The average kinetic energy of the particles.
The frequency of collisions between the particles and the walls.
Diagram 7 shows a rice mortar is used to produce rice. The dried paddy was pound with pestle to separate the rice from the husk.
Which statement shows impulsive force is produced
the pestle is moved at high velocity.
the pestle is lifted at high level
the rice is separated from husk
the pestle hits the mortar
Diagram 8 shows a ball bounces upward when a force acted on a compressed spring is released.
Which pair of energy transformation and magnitude of energy is correct?
The pressure of liquid at the bottom of a jug depends on the following factors except
shape of the jug
depth of liquid
the density of liquid
gravitational field strength
Diagram9 shows a 20 kg wooden box with dimension of 50 cm × 30 cm × 20 cm.
What is the maximum pressure that can be exerted on the floor by this wooden box?
0.03 N cm-2
0.13 N cm-2
0.20 N cm-2
0.33 N cm-2
Diagram 10 shows a barometer is used by Aizan to study the atmospheric pressure at a seaside. The length of h is 76 cm.
What happens to the value of h if Aizan were to bring the barometer to the peak of Gunung Tahan?
Equal to 0 cm
Equal to 76 cm
Larger than 76 cm
Smaller than 76 cm
Diagram 11 shows a hydraulic pump with identical cross-sectional areas of pistons X and Y
Which statement is correct?
The force, F is greater than the weight of load, W
he weight of load, W is greater than the force, F
The pressures exerted on pistons X and Y are equal
The pressure exerted on piston X is less than the pressure exerted on piston Y
Diagram 12 shows a hot air balloon is floating stationary in air. The volume of the balloon is 2000 m3and the density of the air is 1.25 kgm-3
What is the buoyant force acting on the balloon?
1.6 × 103N
1.6 × 104N
2.5 × 103N
2.5 × 104N
Diagram 13 shows passengers are waiting at a train station. When a fast moving train passes, the passengers standing along the platform experience a pulling force towards the moving train.
Which principle explains the situation?
Pascal’s principle
Bernoulli’s principle
Archimedes’ principle
Hydraulic principle
Diagram 14 shows gas X trapped inside a U-tube. The length of mercury column is 14 cm.
What is the pressure of gas X?
[ Density of mercury = 13 600 kgm-3 ]
1.90 × 103Pa
1.90 × 104Pa
1.90 × 105Pa
1.90 × 106Pa
Which of the following functions by using Pascal’s principle?
Diagram 8 shows the sign of "PLEASE STAND BEHIND THE YELLOW LINE" on the platform at railway station.
Which principle is used in this situation to ensure the safety of passengers?
Pascal's principle
Bernoulli's principle
Archimedes' principle
Principle of conservation of momentum
Diagram 7 shows a manometer is connected to a gas supply.
Gas pressure is equal to
10 cm of Hg + atmospheric pressure
4 cm of Hg + atmospheric pressure
Atmospheric pressure - 10 cm of Hg
Atmospheric pressure - 4 cm of Hg
Diagram 6 shows three types of liquids of different density.
Which arrangement of pressure is correct at the height of 2 cm?
Oil = Water = Juice
Oil > Water > Juice
Juice > Water > Oil
Juice > Oil > Water
Which of the following shows the object exert the lowest pressure to the contact surface?
Diagram 9 shows the weight of a stone measured in the air and then in the water.
The volume of water displaced is 2.5 x 10 - 4 m3. What is the reading of x?
(The density of water = 1000 kg m-3)
2.5 N
7.5 N
10.0 N
12.5 N
Which of the following wooden rods exerts the highest pressure on the floor if each load and each wooden rod has the same mass respectively?
Diagram below shows a fish in the sea.
What is the pressure exerted by the water on the fish?
[Water density = 1 000 kg m.3]
6 × 10-3Pa
6 × 101Pa
6 × 103Pa
6 × 104Pa
Which of the following situations only occurs due to atmospheric pressure?
Diagram below shows toothpaste being squeezed out from the tube.
Which principle explains the situation above?
Pascal
Bernoulli
Archimedes
Diagram below shows icebergs floating on the surface of the sea.
Which of the following statements is correct?
Weight of iceberg = Weight of sea water
displaced
Volume of iceberg = Volume of sea water
displaced
Density of iceberg = Density of sea water
displaced
Diagram below shows two similar ping-pong balls suspended on strings of the same length.
Which of the following diagrams shows the condition of the ping-pong balls when air is blown between them?
Diagram below shows a simple barometer.
The difference in height of the two mercury levels is h.
What happens to the value of h when mercury is added to the container?
Increases
Decreases
No change
Whose law explains why our ears pop in an airplane?
Boyle
Charles
Aglow
Zampelli
A student measures the pressure and volume of an empty water bottle to be 1.4 atm and 2.3 L. She then decreases the pressure to 0.65 atm. What is the new volume?
2.1 L
5.0 L
8.2 L
3.9 L
What is the pressure of a car tire that had an initial pressure of 1.8 atm but was heated from 38°C to 123°C?
0.9 atm
2.1 atm
1.6 atm
3.4 atm
A sample of gas with a volume of 30.0 mL at 25.0oC is heated to 50.0oC. What is the new volume of the gas?
60.0 mL
15.0 mL
27.5 mL
32.5 mL
As temperature rises ___________.
an atom's kinetic energy stays the same
an atom's kinetic energy increases
an atom's kinetic energy decreases
an atom's mass increases
What conversion factor would you use to convert 56 atm to mmHg?
760 mmHg / 101.3 kPa
101.3 kPa / 1 atm
1 atm / 760
760 mmHg / 1 atm
