Question

TUUUU15.
225 = IU
human 1
(5 x
27. Show that the trajectory of a projectile is a parabola.
28. State the principle of conservation of mechanical energy and illustrate in case of freely falling body.
29. Define torque and obtain the relation between torque and angular momentum.
V. Answer any TWO of the following questions.
2 x 5 = 10
30. Explain Carnot's cycle for heat engine with P-V diagram.
31. Derive the expression for total energy of a particle executing simple harmonic motion.
32. (a) What are mechanical waves? Give example.
(b) Distinguish between longitudinal and transverse waves.
VI. Answer any THREE of the following questions.
3 x 5=15
33. A stone is tied to one end of a string and whirled in a horizontal circle of radius 1 m at 20 revolutions
per minute. Calculate the angular velocity and linear speed of the stone. Also find the centripetal
acceleration.
34. A force of 10 N acts for 20 second on a body of mass 2 kg initially at rest. Calculate the energy required
by the body and the work done by the applied force.
35. If the earth has a mass 9 times and radius twice of the planet mars, calculate the minimum speed
required by a rocket to pull out of the gravitational force of Mars. Escape speed for an object on the
surface of the earth is 11.2 kms!
Calculate the change in volume of an iron block 10 cm x 20 cm x 5 cm if its temperature is raised from
10°C to 40°C. Given, coefficient of linear expansion of iron =1.2 x 10°°c.
body of 0.25 kg executes SHM given by y = 0.4 sin 0.517 m. Calculate the amplitude, angula
frequency, maximum velocity and maximum acceleration
YSICS/IPUMI​

Answer 1

Answer:

1.2x10°°c.

Explanation:

maybe 0.517

Answer 2

Answer:

TUUUU15.

225 = IU

human 1

(5 x

27. Show that the trajectory of a projectile is a parabola.

28. State the principle of conservation of mechanical energy and illustrate in case of freely falling body.

29. Define torque and obtain the relation between torque and angular momentum.

V. Answer any TWO of the following questions.

2 x 5 = 10

30. Explain Carnot's cycle for heat engine with P-V diagram.

structuring

Explanation:

Derive the expression for total energy of a particle executing simple harmonic motion.

32. (a) What are mechanical waves? Give example.

(b) Distinguish between longitudinal and transverse waves.

VI. Answer any THREE of the following questions.

3 x 5=15

33. A stone is tied to one end of a string and whirled in a horizontal circle of radius 1 m at 20 revolutions

per minute. Calculate the angular velocity and linear speed of the stone. Also find the centripetal

acceleration.

34. A force of 10 N acts for 20 second on a body of mass 2 kg initially at rest. Calculate the energy required

by the body and the work done by the applied force.

35. If the earth has a mass 9 times and radius twice of the planet mars, calculate the minimum speed

required by a rocket to pull out of the gravitational force of Mars. Escape speed for an object on the

surface of the earth is 11.2 kms!

Calculate the change in volume of an iron block 10 cm x 20 cm x 5 cm if its temperature is raised from

10°C to 40°C. Given, coefficient of linear expansion of iron =1.2 x 10°°c.

body of 0.25 kg executes SHM given by y = 0.4 sin 0.517 m. Calculate the amplitude, angula

frequency, maximum velocity and maximum acceleration

YSICS/IPUMI