Quiz Questions PHY130 - CHAPTER 7 (ROTATION MOTION)

Buat dan hantar ketika waktu kuliah ( 20/8/2014).

( PHY130 - J4EC1101F)

1.  Sila buat "mind map" untuk chapter ini. pastikan anda faham dan soalan lisan akan ditanya ketika kuliah.

2. Jawab semua soalan berikut: 

a. (i) Express 9 rev in radians. (ii) how many revolutions equivalent to 12 rad?

b.The shaft of motor rotates at 2100 rev/min. through how many radians does it turn in 25s?

c. A phonograph record 30 cm in diameter turns through an angle 200 degree. how far does a point on the rim of the record travel?

d. A wheel 80cm in diameter turns at 120 rev/min. a) what is the angular velocity of the wheel in radians per second? b) what is the linear velocity of a point on the rim of the wheel in meters per second.

e. The disk blade rotates from rest to 90 rev/s in 240 rev. if the mass and radius of the blade are 0.28 kg and 0.15m, calculate a) angular acceleration.