Distribution of Pressure

Q. A cuboidal body of dimensions 2 m $\times$ 3 m $\times$ 4 m is acted upon by a perpendicular force of 50 N on the top surface (2 m $\times$ 3 m) as shown in the figure. Calculate the pressure due to the force on that surface.

1. $\frac{50}{6}Pa$
2. $\frac{50}{12}Pa$
3. $\frac{50}{8}Pa$
4. $\frac{50}{16}Pa$

Q.

A $50N$ force is applied on an area of $2m^2$. Compute the pressure.

1. $100Pa$

2. $0Pa$

3. $1Pa$

4. $25Pa$

Q. Calculate the pressure developed by a force of $\text{50 N}$ acting on an area of ${\text{10 m}}^2$.

1. $\text{10 Pa}$
2. $\text{5 Pa}$
3. $\text{15 Pa}$
4. $\text{20 Pa}$

Q.

Statement 1: For the same force acting on two different surfaces, more pressure is developed on the surface with a smaller area.
Statement 2: Pressure is defined as force per unit area.

1. Statement 1 is true, Statement 2 is true and Statement 2 is the correct explanation of Statement 1.

2. Statement 1 is true and Statement 2 is false.

3. Statement 1 is true, Statement 2 is true and Statement 2 is not the correct explanation of Statement 1.

4. Statement 1 is false and Statement 2 is true.

Q.

A man applies a force of 20 N to kill a fly with a flat stick. If the area over which the force is acting is 2 $c{m}^2$, calculate the pressure on that area.

1. Pa

2. Pa

3. Pa

4. Pa

Q.

There are two school bags A & B. Bag A is provided with a broader strap, while bag B is provided with a thinner strap. For the same load, a school boy likes bag A as he is comfortable with it; but with bag B, he develops a pain in his shoulders. This is because:

1. Bag A has a broader strap than B, due to which the pressure felt is less for the same load.

2. Bag B has a thinner strap than A, due to which the pressure felt is more for the same load.

3. Both A & B

4. None of these

Q. A column of air extending up to height of the atmosphere exists on an area of $100c{m}^2$ exists above our head. Why don't we get crushed?

1. The pressure inside his body is equal to the atmospheric pressure.
2. The pressure inside his body is higher than the atmospheric pressure.
3. His skin is not sensitive enough to feel it.
4. The pressure inside his body is lower than the atmospheric pressure.

Q. Porters place a circular cloth on their head while carrying loads to ______ between head and load.

1. reduce gap
2. decrease weight
3. increase area of contact
4. decrease area of contact

Q.

How can we define pressure?

1. Force per unit area

2. Area per unit force

3. Force exerted by the liquid on the walls of container

4. Force inside an air balloon

Q.

While cooking, a chef cuts his hand with a sharp-edged knife. To his surprise, his hand did not get a cut with a spoon even on the application of a greater force. What can be a possible reason for this difference?

1. For the same force, the pressure developed due to the knife is much larger because of its sharp edge.

2. For the same force, the pressure developed due to the knife is much smaller because of its sharp edge.

3. For the same force, the pressure developed due to the spoon is much smaller because of its sharp edge.

4. For the same force, the pressure developed due to the spoon is much larger because of its sharp edge.