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Physics Part-I

Laws of motion

Two bodies of masses 10 kg and 20 kg respectively, kept on a s

Physics Part-I

Class 11

NCERT

Chapter 1: Physical World

16 questions

Chapter 2: Units and Measurements

51 questions

Chapter 3: Motion in Straight Line

50 questions

Chapter 4: Motion in a Plane

43 questions

Chapter 5: Laws of motion

52 questions

Figure shows the position-time graph of a particle of mass

4 k g

. What is the (a) force on the particle for

t 4 s, 0 < t < 4 s

(b) impulse at t = 0 and t = 4 s? (Consider one-dimensional motion only).

Two bodies of masses

10

k g

and

20

k g

respectively, kept on a smooth, horizontal surface are tied to the ends of a light string. A horizontal force

F

=

600

N

is applied to(i) A (ii) B along the direction of string. What is the tension in the string in each case?

Two masses

8

k g

and

k g

k g

are connected at the two ends of a light inextensible string that goes over a frictionless pulley. Find the acceleration of the masses, and the tension in the string when the masses are released.

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Chapter 6: Work, Energy and Power

41 questions

Chapter 7: System of Particles and Rotational Motion

45 questions

Chapter 8: Gravitation

33 questions

Question

Easy

Solving time: 2 mins

Two bodies of masses $10$ $k g$ and $20$ $k g$ respectively, kept on a smooth, horizontal surface are tied to the ends of a light string. A horizontal force $F$ $=$ $600$ $N$ is applied to(i) A (ii) B along the direction of string. What is the tension in the string in each case?

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Updated on: Sep 11, 2023

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Physics Part-I (NCERT)

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Two bodies of masses

10

k g

and

20

k g

respectively, kept on a smooth, horizontal surface are tied to the ends of a light string. A horizontal force

F

=

600

N

is applied to(i) A (ii) B along the direction of string. What is the tension in the string in each case?

15 mins ago

Discuss this question LIVE

15 mins ago

Text solutionVerified

Horizontal force,

F = 600

Mass of body A,

m_{1} = 10

Mass of body B,

m 2 = 20

Total mass of the system,

m = m 1 + m 2 = 30

Using Newtons second law of motion, the acceleration (a) produced in the system can be calculated as:

F = ma

a = \frac{F}{m} = \frac{600}{30} = 20 m / s^{2}

When force F is applied on body A:

The equation of motion can be written as:

F - T = m_{1} a

T = F - (m_{1}) a

= 600 - 10 \times 20 = 400

N (i)

When force F is applied on body B:

The equation of motion can be written as:

F - T = m_{2} a

T = F - (m_{2}) a

T = 600 - 20 \times 20 = 200

N (ii)

which is different from value of T in case (i). Hence our answer depends on which mass end, the force is applied.

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Practice more questions from Physics Part-I (NCERT)

Figure shows the position-time graph of a particle of mass

4 k g

. What is the (a) force on the particle for

t 4 s, 0 < t < 4 s

(b) impulse at t = 0 and t = 4 s? (Consider one-dimensional motion only).

Two bodies of masses

10

k g

and

20

k g

respectively, kept on a smooth, horizontal surface are tied to the ends of a light string. A horizontal force

F

=

600

N

is applied to(i) A (ii) B along the direction of string. What is the tension in the string in each case?

Two masses

8

k g

and

k g

k g

are connected at the two ends of a light inextensible string that goes over a frictionless pulley. Find the acceleration of the masses, and the tension in the string when the masses are released.

View all

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Question Text	Two bodies of masses $10$ $k g$ and $20$ $k g$ respectively, kept on a smooth, horizontal surface are tied to the ends of a light string. A horizontal force $F$ $=$ $600$ $N$ is applied to(i) A (ii) B along the direction of string. What is the tension in the string in each case?
Updated On	Sep 11, 2023
Topic	Laws of motion
Subject	Physics
Class	Class 11
Answer Type	Text solution:1 Video solution: 3
Upvotes	393
Avg. Video Duration	8 min

Two bodies of masses $10$ $k g$ and $20$ $k g$ respectively, kept on a smooth, horizontal surface are tied to the ends of a light string. A horizontal force $F$ $=$ $600$ $N$ is applied to(i) A (ii) B along the direction of string. What is the tension in the string in each case?

Text solutionVerified

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Two bodies of masses 10 kg and 20 kg respectively, kept on a smooth, horizontal surface are tied to the ends of a light string. A horizontal force F = 600 N is applied to(i) A (ii) B along the direction of string. What is the tension in the string in each case?

Text solutionVerified

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Two bodies of masses $10$ $k g$ and $20$ $k g$ respectively, kept on a smooth, horizontal surface are tied to the ends of a light string. A horizontal force $F$ $=$ $600$ $N$ is applied to(i) A (ii) B along the direction of string. What is the tension in the string in each case?