Question

s l An 8.00 m massless rod is loosely pinsed to a frictionless pivot at O, as shown in the figuare. A atached to the other end of the rod. The ball is held at A, where the rod makes a 30.0 and is released. The ball-rod assembly then swings freely with negligible friction in a Questien 7 (1ntli very small 4.00 kg ball is angle above the horizontal, vertical cirele between A and B. The tension in the rod when the ball passes through the lowest poimt at Dis closest to A) 200. N. B) 157 N C) 120 N D) 80.0 N. E) 40.0 N

Answer 1

At 닝he bottom point D T-m must rovide nece ssory do keet the okech- 2 Tm where ub, the velout of the ball od 낫he nadiu To nd. Up we ue conservation of ene 2. S m 2 etc enes Consevation or ene

2 2 Using m ak