110٤ئ ‏مم مومه وم وود للم مل‎ ۰
THIRD SEMESTER B.AJ/B.Sc. DEGREE EXAMINATION, NOVEMBER 2019
(CUCBCSS—UG)
Physics/Applied Physics
PHY 8B 03/APY 3B 083—MECHANICS
Time : Three Hours Maximum ; 80 Marks
Section A

Answer all questions.
Each question carries 1 mark.
Answer in a word or phrase.

Newton’s laws of motion are valid in reference systems, known as
C-frame is also known as

The simplest frame of reference is a-—————— coordinate system.
Expression for an areal velocity of a particle gives -

The limitations on the motion of a system are called

سر ‎ഉ. 9. १‏ م ضير

The equations which provide the relationship between the coordinates of two reference systems
are called

7. Avector in four dimensional ————— space is called a four vector.
True or False :

8. The constraint of a particle moving on an ellipsoid under the influence of gravity is holonomic

9. The angular momentum of a particle is constant of motion in presence of external torque. This is
the conservation theorem of angular momentum of a particle.

10. Results of Michelson Morley experiment suggests that the speed of light in vaccum must be the
same in all inertial frames.

(10 x 1 = 10 marks)
Section B
Answer all questions.

Each question carries 2 marks.
Answer in two or three sentences.

11. Explain work energy theorem.
12. Define Newton’s law of force.