Answer:
20 m/s
Explanation:
The frictional force the road exerts on the car provides the centripetal force that keeps the car in circular motion along the curve:
where
F is the centripetal force
m is the mass of the car
r is the radius of the curve
v is the speed of the car
In this problem we have:
m = 2000 kg
r = 200 m
F = 4000 N is the maximum force
Re-arranging the equation, we can calculate the maximum speed v corresponding to this force:
<span>Answer:
So at joints C and D do I let there be a Cx, Cy and Dx, Dy respectively or do I just keep it as Fwd and Fwc? Either way I can't seem to solve it. â‘Fx=0=WD-4293cos19.74 ÎŁFy=0=Fwc Sin19.74 - 1450 Fwc= 4203 lb WD = 4041 lb Then at joint C â‘Fx=0=CDsin30 - CAsin30 - 4041 â‘Fy=0=1450-CDcos30-CAcos30 CD = 4878 CA = -3204 Incorrect.
Reference https://www.physicsforums.com/threads/statics-hydraulic-crane.776033/</span>
The examples where using conservation of energy to solve a problem is easier than other methods are:
1. Pendulum
2. Nuclear Power Plant
The principle of the conservation of energy says that:
Energy within an isolated system is neither created nor destroyed, it simply changes from one type of energy to another.
1. Pendulum:
As the pendulum swings down:
gravitational potential energy of the pendulum →kinetic energy of the pendulum.
As the pendulum swings up: kinetic energy of the pendulum→ gravitational potential energy of the pendulum.
2. Nuclear Power Plant:
Nuclear energy (from the decay of uranium) → thermal energy of water
→kinetic energy of a turbine →electrical energy + thermal energy (from friction in the turbine and transmission lines)
Learn more about conservation of energy, click here brainly.com/question/13949051
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Answer:
Explanation:
95.0 km/hr = 26.39 m/s
65 km/hr = 18.06 m/s
Circumference of a tire is 0.9π m
77 revolutions is a distance of
77(0.9π) = 69.3π m
v² = u² + 2as
a = (v² - u²) / 2s
a = (18.06² - 26.39²) / (2(69.3π))
a = -0.85 m/s²
s = (v² - u²) / 2a
s = (0² - 26.39²) / 2(-0.85)
s = 409 m