Answer:

Explanation:
Given:
mass of person, 
mass of merry go-round, 
radius of merry go-round, 
velocity of the person running, 
<u>We consider merry go-round as a ring:</u>
Now the moment of inertial of the ring is given as,



<u>Moment of inertia of the person considering as a point mass:</u>



<u>Now according to the conservation of angular momentum:</u>

where:
angular velocity of the merry-go-round
angular velocity of the person running



Answer:
carbon is that component :)
Answer:
<h3>10.1m/s</h3>
Explanation:
Using the equation of motion v² = u²+2as where;
v is the final velocity
u is the initial velocity
a is the acceleration due to gravity
s is the height of fall
Given
u = 2.0m/s
s = 5.0m
g = 9.81m/s²
Required
final velocity of the book in m/s
Substitute the given parameters into the formula;
v² = u²+2as
v² = 2²+2(9.81)(5)
v² = 4+98.1
v² = 102.1
v = √102.1
v = 10.1m/s
<em>Hence the final velocity of the book in m/s is 10.1m/s</em>
Answer:
centripetal acceleration = 4.5 m/s^2 ; centripetal force = 247.5 N
Explanation:
centripetal acceleration = v^2 / r = 9^2 / 18 = 4.5 m/s^2
centripetal force = mv^2 / r = 4.5 x 55 = 247.5 N
Answer:
Watt
Explanation:
Power is defined as the work done by an object per unit time. Its mathematical form is given by :

The SI unit of work done is Joules (J) and that of time is seconds (s).
J/s is equal to watts. Watt is the metric unit of power.