Force and Pressure

Moving a heavy desk from one corner of the room to another requires applying a:

When you use a steering wheel to turn a car, you are using force to change the car's:

Stretching a coil spring involves what kind of force?

When a cyclist stops pedaling and applies brakes, the bicycle slows down because of:

If you press a rubber ball placed on a table with your palm, what change will be most observable?

Which of the following actions involves both a push and a pull?

If two forces of $10\text{ N}$ and $8\text{ N}$ act on an object in the same direction, the net force is __________.

If two forces of $10\ N$ each act on an object at an angle of $180$ degrees to each other, what is the resultant force?

A tennis ball is hit with a racket. Which of the following effects of force is LEAST likely to be observed during the very brief moment of contact?

A plastic comb is rubbed with dry hair and then used to pick up small bits of paper. This demonstrates that force can:

Which force helps in holding a glass tumbler in our hand?

Which of these forces can act from a distance?

The force that acts between two charged bodies is:

Two unlike magnetic poles ________ each other.

Analyze the scenarios shown in the classification diagram. Which option correctly identifies the types of forces acting in Scenario A and Scenario B?

Observe the two different interactions presented in the diagram below. Which statement correctly identifies the nature of the forces involved in Interaction 1 and Interaction 2?

When two forces of $20 N$ and $10 N$ act on an object in opposite directions, what is the net force?

Two charged particles are separated by a distance $r$. If the charge on one particle is doubled, the electrostatic force between them:

In the context of forces, what does it mean when we say a force is a 'vector'?

When you press a suction cup against a smooth wall, it sticks. What is the primary 'force' that keeps it pressed against the wall?

Pressure is defined as:

Which among the following is a unit of area in the pressure formula $P=F/A$?

If the area is $2 m^2$ and the pressure is $50 Pa$, find the force.

Large trucks have many wheels to ________ the pressure on the road.

A force of $12 N$ is applied to a surface of $0.001 m^2$. What is the pressure?

Skis used for gliding over snow have a large surface area to:

The pressure of $1000 Pa$ is acting on a surface of $250 cm^2$. Calculate the force in Newtons.

A rectangular block $10 cm \times 10 cm \times 5 cm$ is placed on a table. What is the ratio of the pressure exerted when it lies on its $10 cm \times 10 cm$ face to when it lies on its $10 cm \times 5 cm$ face?

The pressure on the ground due to a person is $20,000 Pa$. If the person is carrying a load equal to his own weight, and the contact area remains the same, what is the new pressure?

A cube of wood of side $10 cm$ floats in water. If the density of wood is $700 kg/m^3$, what is the pressure exerted by the cube on the water surface? ($g = 10 m/s^2$)

Which of the following correctly describes the relationship between pressure ($P$), force ($F$), and area ($A$)?

When air is removed from a tin can using a vacuum pump, the can collapses inwards because:

The pressure exerted by a liquid at a depth of $10 m$ in water will be ________ the pressure at a depth of $5 m$ in water.

The walls of a submarine are made very thick because:

What is the relationship between the height of a liquid column ($h$) and the pressure ($P$) it exerts at the base?

A liquid exerts pressure on the bottom of the container due to its __________.

When we inhale, our lungs expand. This expansion:

If the density of the atmosphere were constant throughout, what would happen to the relationship between altitude and atmospheric pressure?

A liquid is kept in a container. The pressure at a point inside the liquid does NOT depend on:

The atmospheric pressure at sea level is approximately $101.3\text{ kPa}$. This pressure is equivalent to the weight of a mass of about _____ on every square meter.

The instrument 'Manometer' is primarily used to measure:

Why is it difficult to pull apart two joined hemispheres with a vacuum inside?

If the area of a surface is halved while the force remains the same, the pressure will:

Liquid pressure ______ with the depth of the liquid column.

Why do mountaineers sometimes suffer from nosebleeds at high altitudes?

Atmospheric pressure is $1.01 \times 10^5\text{ Pa}$. This is equivalent to about $1.01$ bar. How many millibars are in $1$ bar?

Which of the following describes a 'vacuum'?

Which instrument is specifically used as an altimeter in airplanes to measure altitude based on atmospheric pressure?

Why do some people experience pain in their sinuses during a flight landing?

If you are in a pressurized airplane cabin at 35,000 feet, and the cabin pressure system fails, what happens to the air inside your lungs?