Matter In Our Surroundings

Question

A force of 5 N is acting on an object. The object is displaced through 2 m in the direction of the force, as shown in Fig. 11.5. If the force acts on the object all through the displacement, then what is the work done?

(Textbook Example 11.1)

Solution

Consider the object on which the force is acting upon as shown in the fig. below.

We have,
Force, F = 5 N
Displacement, s = 2 m
Therefore,
Work done, W = Fs = 5N $cross times space 2 straight m$ = 10 Nm = 10 J

Some More Questions From Matter In Our Surroundings Chapter

Give reason for the following observations.

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Matter In Our Surroundings

A force of 5 N is acting on an object. The object is displaced through 2 m in the direction of the force, as shown in Fig. 11.5. If the force acts on the object all through the displacement, then what is the work done?

(Textbook Example 11.1)

Some More Questions From Matter In Our Surroundings Chapter

Give reason for the following observations.

Naphthalene balls disappear with time without leaving any solid.

Give reason for the following observations.

We can get the smell of perfume sitting several metres away.

What is the physical state of water at

a) 25°C
b)0⁰C
c)100⁰C

What is the physical state of water at
0°C

What is the physical state of water at
100°C

Give two reasons to justify
Water at room temperature is a liquid.

Give two reasons to justify
An iron almirah is a solid at room temperature.

Why is ice at 273K more effective in cooling than water at the same temperature ?

What produces more severe burns, boiling water or steam ?

8. Name A, B, C, D, E and F in the following diagram showing state change :

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NCERT Sample Papers

Entrance Exams Preparation

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For Daily Free Study Material Join wiredfaculty

Matter In Our Surroundings

A force of 5 N is acting on an object. The object is displaced through 2 m in the direction of the force, as shown in Fig. 11.5. If the force acts on the object all through the displacement, then what is the work done? (Textbook Example 11.1)

Some More Questions From Matter In Our Surroundings Chapter

Give reason for the following observations.Naphthalene balls disappear with time without leaving any solid.

Give reason for the following observations.We can get the smell of perfume sitting several metres away.

What is the physical state of water ata) 25°C b)00Cc)1000C

What is the physical state of water at0°C

What is the physical state of water at100°C

Give two reasons to justifyWater at room temperature is a liquid.

Give two reasons to justifyAn iron almirah is a solid at room temperature.

Why is ice at 273K more effective in cooling than water at the same temperature ?

What produces more severe burns, boiling water or steam ?

8. Name A, B, C, D, E and F in the following diagram showing state change :

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

A force of 5 N is acting on an object. The object is displaced through 2 m in the direction of the force, as shown in Fig. 11.5. If the force acts on the object all through the displacement, then what is the work done?

(Textbook Example 11.1)

Give reason for the following observations.

Naphthalene balls disappear with time without leaving any solid.

Give reason for the following observations.

We can get the smell of perfume sitting several metres away.

What is the physical state of water at

a) 25°C
b)0⁰C
c)100⁰C

What is the physical state of water at
0°C

What is the physical state of water at
100°C

Give two reasons to justify
Water at room temperature is a liquid.

Give two reasons to justify
An iron almirah is a solid at room temperature.