Answer:
B) I1 = 1680 kg.m^2 I2 = 1120 kg.m^2
C) V = 0.84m/s T = 29.92s
D) ω2 = 0.315 rad/s
Explanation:
The moment of inertia when they are standing on the edge:
where M is the mass of the merry-go-round.
I1 = 1680 kg.m^2
The moment of inertia when they are standing half way to the center:
I2 = 1120 kg.m^2
The tangencial velocity is given by:
V = ω1*R = 0.84m/s
Period of rotation:
T = 2π / ω1 = 29.92s
Assuming that there is no friction and their parents are not pushing anymore, we can use conservation of the angular momentum to calculate the new angular velocity:
I1*ω1 = I2*ω2 Solving for ω2:
ω2 = I1*ω1 / I2 = 0.315 rad/s
I’m assuming you’re supposed to calculate the resultant force?
425N (right) -300N (left)
=125 N to the right
Hello:
First, <u>the normal force</u> in y axis:
∑Fy = 0
∑Fy = N - Fy
∑Fy = N - 20 N * sen 37°
∑Fy = N = 12,87 N
Formula:
R = ma
F - F' = ma
F - (μN) = ma
20 N - (0.2 * 12,87 N) = 3 kg * a
20 N - 2.574 N = 3 kg * a
17,426 N / 3 kg = a
a = 5,8 m/s²
Answer:
not sure u dont show anything??
Explanation:
<span>Because meteorites & the parent asteroids and meteoroids from which they come represent the primordial material from which Earth was formed. All the past material from which the planet first formed, so to find samples of the source material we turn to meteorites. thats for the first question</span>
