Answer:
11.34 m/s
Explanation:
Force F = 25 N
Lenght of application l = 16.5 cm = 0.165 m
Time of application t = 1 sec
Radius of wheel r = 33.0 cm = 0.33 m
Moment of inertia I = 1200 kg·cm^2 = 0.12 kg-m^2
Let us assume he rides a fixed gear bicycle so that one revolution of the pedal is equal to one revolution of the tire
Solution:
Torque T on pedal = F x l = 25 x 0.165 = 4.125 N-m
Rotational impulse = T x t = 4.125 x 1 = 4.125 N-m-s
Initial momentum of wheel = 0 (since it start from rest)
Final momentum of wheel = I x w
Where w = angular speed
I x w = 0.12w
Change of momentum = 0.12w - 0 = 0.12w
Rotational impulse = momentum change
4.125 = 0.12w
w = 4.125/0.12 = 34.375 rad/s
Tangential velocity of wheel = angular speed x radius of wheel
V = w x r = 34.375 x 0.33 = 11.34 m/s
Answer:
Makes it hard to go to sleep at night
Explanation:
Pangea trust me I’ve done this
<h2>Answer:</h2>
False
<h2>Explanation:</h2>
Acid rain is produced when the incomplete combustion of fossil fuels releases sulfur dioxide and nitrous dioxide in the air. These oxides get mixed with the rain water to produce sulfuric acid and nitric acid respectively. Therefore we can say that Acid Rain is actually an indirect result rather than direct result of acid released by burning fossil fuels because burning produces oxides, not acids.
As they evolved and adapted, those of the fittest survived to reproduce. Those that did not adapt, died.