The 88 N concrete filled tennis ball is attached to the fixed point O by a light
ID: 1321955 • Letter: T
Question
The 88 N concrete filled tennis ball is attached to the fixed point O by a light, stiff rod. The ball is given an initial downward speed of 7.63 m/s and swings in a vertical plane.
7.69 pts.100%
7.69 pts.100%
7.69 pts.100%
The 88 N concrete filled tennis ball is attached to the fixed point O by a light, stiff rod. The ball is given an initial downward speed of 7.63 m/s and swings in a vertical plane.
Hints: 2,0 # tries: 0 C. What will the value of theta be when the speed is 1.07 m/s? (measured CCW from initial location) (include units with answer) 7.69 pts.100% 2% try penalty Hints: 1,0 # tries: 0 B. What is the maximum height (vertical distance) above the original horizontal position that the sphere will reach? (include units with answer) The 88 N concrete filled tennis ball is attached to the fixed point O by a light, stiff rod. The ball is given an initial downward speed of 7.63 m/s and swings in a vertical plane. Part Description Answer Chk History A. What is the sphere's speed at the bottom of its circular path? (include units with answer)Explanation / Answer
A) Apply, v^2 - u^2 = 2*a*s
v^2 - 7.63^2 = 2*9.8*3.9
v = sqrt(7.63^2 + 2*9.8*3.9)
= 11.6 m/s <<<<<<<<-----------Answer
B)
Apply, v^2 - u^2 = 2*a*s
o^2 - 7.63^2 = 2*(-9.8)*h
==> h = 7.63^2/(2*9.8)
= 2.97 m<<<<<<<<-----------Answer
C) let h is the height when v = 1.07 m/s
again Apply, v^2 - u^2 = 2*a*s
1.07^2 - 7.63^2 = 2*(-9.8)*h
==> h = (7.63^2 - 1.07^2)/(2*9.8)
= 2.911 m
now, theta = 180 + sin^-1(2.911/3.9)
= 180 + 48.28
= 228.28 degrees <<<<<<<<-----------Answer
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