Problem 5 There is a common classroom physics demo that involves a bowling ball and a pendulum where a
bowling ball is release from a person's nose, it swings out and back. Due to conservation
of energy
when the bowling ball returns it barely touches the person's nose. For this problem, the demo is
altered so that a student stands at each side of the pendulum in the position so that the bowling ball
would only touch their nose. If the student who releases the bowling ball is 5 ft 2 in tall and the student
on the opposite side is 5 ft 8 in tall, we know the taller student would not get hit by the ball because the
ball would only rise to 5 ft 2 in. However, if the student releasing the bowling ball sneezes the instant
they release the ball and give it a kick of 6 fts, does the taller student have a broken nose? In other
words, would the bowling ball reach the height of 5 ft 8 in?

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation:

dang that balls went far

the force represented by vector a is normal force. if the hockey puck is moving to the right, when it is hit with a significant force by the hockey stick the puck will move off in a different direction. correct on edge.