Question 5: 
A bar with a length L = 900 mm and mass m = 4 kg hangs on a hinge C. A horizontal force P = 75 N is exerted on the end B. 
(a) How great should distance r be assuming the horizontal component of the reaction force at C becomes zero. 
(b) What is the angular acceleration of the bar?

Answer rating: 100% (QA)

aDistance r L900 mm09 m Mass m4 kg Horizontal force P75N Hence ar ImL 2 12 S... View the full answer