Question 5 C
Posted: Wed Jun 08, 2022 8:04 pm
Question 5 C
(c) The figure below shows the apparatus you used in Lab 2: a disc of radius R = 0.114 m, a shaft of radius 7 = 0.0126 m and a mass m = 20 g. A string is wrapped around the shaft and tied to the mass m at the other end. The mass m = 20 g is dropped from rest for a height of 0.714 m from the floor to rotate the shaft and the disc. It takes 22.3 s for the mass to drop on to the floor for the height of 0.714 m. The mass of the shaft is considered negligible. m (i) Determine the angular acceleration of the disc when the mass m is dropping. [3 marks]
(ii) Calculate the centripetal acceleration at point A of the disc just before the mass hits the floor. [3 marks]
- Question 5 C 1 (22.58 KiB) Viewed 21 times
- Question 5 C 2 (3.14 KiB) Viewed 21 times
(ii) Calculate the centripetal acceleration at point A of the disc just before the mass hits the floor. [3 marks]