To solve this problem, it is necessary to use the concepts related to the Force given in Newton's second law as well as the use of the kinematic equations of movement description. For this case I specifically use the acceleration as a function of speed and time.
Finally, we will describe the calculation of stress, as the Force produced on unit area.
By definition we know that the Force can be expressed as
F= ma
Where,
m= mass
a = Acceleration
The acceleration described as a function of speed is given by
Where,
Change in velocity
Change in time
The expression to find the stress can be defined as
Where,
F = Force
A = Cross-sectional Area
Our values are given as
Replacing at the values we have that the acceleration is
Therefore the force expected is
Finally the stress would be
Therefore the compressional stress that the arm withstands during the crash is 49.97Mpa
Answer:
It takes over eight minutes
To reach Saturn, the next closest planet, would take another 36 minutes, and a further three hours or so to reach Pluto.
Explanation:
Answer:
Friction = 2 N
Explanation:
F = ma
= .4 * 24.5 = 9.8 N net force 10 N by stick means Ffriction = 2 N
niAnswer:
(A) Vx = -9.14ωCosωt,
Vy = 9.14ωSinωt
(B) ax =9.14ω²Sinωt,
ay = 9.14ω²Cosωt
Explanation:
The velocity of a body ia the time derivative of the poaition function of the body with respect to time. Given equations x = −9.14 sin ωt and y = 4.00 − 9.14 cos ωt,
All we need to do to get the velocity is to differentiate each of the equation above with respect to time in order to get Vx and Vy required of us.
Vx = dx/dt = -9.14ωCosωt and
Vy = dy/dt = 9.14ωSinωt
In order to get the acceleration we differentiate the velocity function with respect to time. That is,
A = dv/dt
ax = dVx/dt = 9.14ω²Sinωt
ay = dVx/dt = 9.14ω²Cosωt
To solve this problem you must apply the proccedure shown below:
1. You must apply the formula for calculate the mechanical advantage, which is:
M.A=Wheel radius/Axle radius
2. Therefore, you have:
Axle radius=0.25 inches=0.0208 feet
Wheel radius=1 feet
M.A=1 feet/0.0208 feet
M.A=48
Therefore, the answer is: 48