Question

Answer the following questions (any four)08

1. State love conservation of linear momentum.

2. Define moment of inertia and give its unit and

dimensional formula.

3. Write the triangle Law of vector addition.

4. What is dimensional equation? explain with

example.

5. A cricket player moves his hand backward while

we catch the ball why?

6. Answer the following quetions ( any four )12

1. Differentiate inertia and moment of inertia.

2. write the relation between momentum (p) and

kinetic energy (E).the kinetic energy of a body

is increased 4 times. what will be the change in

momentum.

3. State Newton's Law of Motion?

4. A constant retardation force of 50N is applied to

a body of mass 20kg moving initially with a speed

of 15 metre per second. How long does it take tostop.

5. What do you understand by time period and

frequency.

7. Answer the following questions 30

1. Check the correctness of the following

equation by dimensional method.

s = ut + 1/2 at² and v² = u² + 2as

Or

• How much dyne is in 1 Newton.

2. Derive second and third equation of

motion by graphical method.

Or

• A car travels from City a city A to city B with a

speed of 40 kilometre per hour and returns back

to city A, with the speed of 50 km per hour. What is

the average speed of car ? what will be its average

velocity?

3. Define linear velocity and angular velocity

of a particle in circular motion establish

relation between them.

Or

• Explain the law of the parallelogram of

vectors addition.

4. Write Newton's second law of motion and prove

that F = ma, define SI unit of force

Or

• What is the law of the conservation of the linearmomentum? prove it with the help of Newton's

second law.

5. State work energy theorem and prove it for a

constant force.

Or

• Prove that kinetic energy K = 1\2 mv²

6. State theorem of parallel axes of the moment of

inertia and prove it.

Or

• Deduce expression for the moment of inertia of a

body.

*********************************************​

Answer 1

• The linear momentum of a particle is defined as the product of the mass of the particle times the velocity of that particle. Conservation of momentum of a particle is a property exhibited by any particle where the total amount of momentum never changes. Linear momentum of a particle is a vector quantity and is denoted by →p

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Answer 2

• The linear momentum of a particle is defined as the product of the mass of the particle times the velocity of that particle. Conservation of momentum of a particle is a property exhibited by any particle where the total amount of momentum never changes. Linear momentum of a particle is a vector quantity and is denoted by →p.