Answer:
Total Mechanical Energy of the gymnast = 1940J = 1.94 kJ
Explanation:
Total Mechanical Energy = KE + PE + SE
Kinetic Energy,
Potential Energy,
Strain Energy,
Since there is no force of deformation, x = 0, SE = 0
Total Mechanical Energy = 225 + 1715
Total Mechanical Energy of the gymnast = 1940J = 1.94 kJ
SOLVED DOWN BELOW
Explanation:
In series the same current goes thru both resistors, equiv resistance is 200 ohms, then using ohms law
<em>I = 25/200</em>
<em>I= .125 amps or 125 ma</em>
__________
<em>R= r1 * r2 / r1 +r2</em>
<em>R= 100 * 100 / 100 + 100</em>
<em>R= 10000 / 200</em>
<em>R= 50 ohms </em>
The time interval needed for the disk to rev from leave to 25.0 m/s
= 0.57 s
<h3>What is the time interval?</h3>
- A larger period of time can be split up into multiple shorter, equal-length segments.
- These are referred to as time periods. Consider the scenario where you wished to gauge a car's speed over an hour-long trip. You could break up an hour into ten-minute segments.
- In Hz, frequency is defined as the number of cycles per second. Simply divide 1 by the frequency to determine the time interval for a known frequency (e.g., a frequency of 100 Hz has a time interval of 1/(100 Hz) = 0.01 seconds; 500 Hz has a time interval of 1/(500Hz) = 0.002 seconds, etc.).
Given:
vo = 0
v = 25.4 m/s
r = 0.95 m
n = 1.21 rev
A.
r*ω = v
ω = v/r
= 25.4/.95
= 26.74 rad/s
B.
θ = 2πn
= 2π × (1.21)
= 7.6 m
Using equation of motion,
ωf^2 = ωi^2 + 2αθ
(26.74)^2 = 2 × α × (7.6)
α = 715.03/15.2
= 47.04 rad/s^2
C.
Using equation of motion,
θ = ωi*t + 1/2*α*t^2
θ = 0 + 1/2*α*t^2
7.6 = 47.04/2 × t^2
= sqrt(0.323)
= 0.57 s
Therefore the correct answer is 0.57 s
To learn more about time interval, refer to:
brainly.com/question/479532
#SPJ4
<h3>Solution for the above question : -</h3>
Ohm's law states that :
the terms used are :
let's solve for electric current :