In the figure,a 4.0-kg ball is on the end of a 1.6-m rope that is fixed at 0.The ball is held at point A,with the rope horizontal,and is given an initial downward velocity.The ball moves through three quarters of a circle with no friction and arrives at B,with the rope barely under tension.The initial velocity of the ball,at point A,is closest to
A)4.0 m/s
B)5.6 m/s
C)6.3 m/s
D)6.9 m/s
E)7.9 m/s

Question

In the figure,a 4.0-kg ball is on the end of a 1.6-m rope that is fixed at 0.The ball is held at point A,with the rope horizontal,and is given an initial downward velocity.The ball moves through three quarters of a circle with no friction and arrives at B,with the rope barely under tension.The initial velocity of the ball,at point A,is closest to 
A)4.0 m/s 
B)5.6 m/s 
C)6.3 m/s 
D)6.9 m/s 
E)7.9 m/s

Quizplus · Accepted Answer

The Answer of In the figure,a 4.0-kg ball is on the end of a 1.6-m rope that is fixed at 0.The ball is held at point A,with the rope horizontal,and is given an initial downward velocity.The ball moves through three quarters of a circle with no friction and arrives at B,with the rope barely under tension.The initial velocity of the ball,at point A,is closest to 
A)4.0 m/s 
B)5.6 m/s 
C)6.3 m/s 
D)6.9 m/s 
E)7.9 m/s

In the Figure,a 4