A80.6 kg ice skater is moving at 3.34 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. she then moves in a circle of radius 0.714 m around the pole. find the force exerted by the rope on her arms. the acceleration of gravity is 9.8 m/s 2 . answer in units of kn.

1.26kN

Explanation:

This kind of force that keeps a body moving in a circular path is known as the centripetal force (F). This force depends on the mass(m), velocity(v) and radius of the circular path in which the body moves (r).

Mathematically,

F = mv²/r

According to the question

Mass = 80.6kg

velocity = 3.34m/s

radius = 0.714m

F = 80.6×3.34²/0.714

F = 1259.3N

F = 1.26kN

Note that 1000N = 1kN

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: