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stellarik [79]
3 years ago
7

A 10 kg cart is attached to a rope that forces the cart to travel along a circular path. The rope has a length of 2.7 meters and

has a rotational speed of 2.0 rotations per second.
Physics
1 answer:
vagabundo [1.1K]3 years ago
8 0

Answer:

  F = 4361.7 N

Explanation:

In this exercise the force of the string is asked, to solve it we use Newton's second law

          F - W = m a

force is the tension of the rope

         

the centripetal acceleration is

        a = v² / r

the angular and linear speed are related

        v = w r

let's substitute

          F - mg = m w² r

          F = m (g + w² r)

let's reduce the magnitudes to the SI system

       w = 2.0 rot / s (2π rad / 1 rev) = 4π  rad / s

let's calculate

       F = 10 (9.8 + (4π)² 2.7)

       F = 4361.7 N

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Jlenok [28]
Hello!

We have the following data:

KE (Kinetic Energy) = ? (in Joule)
m (mass) = 0.5 Kg
v (speed) = 10 m/s

<span>Formula to calculate kinetic energy:

</span>KE =  \frac{1}{2} *m*v^2
<span>
Solving:

</span>KE = \frac{1}{2} *m*v^2

KE = \frac{1}{2} *0.5*10^2

KE = \frac{1}{2} *0.5*100

KE = \frac{50}{2}

\boxed{\boxed{KE = 25\:Joule}}\Longleftarrow(kinetic\:energy\:of\:a\:ball)\end{array}}\qquad\quad\checkmark


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4 0
3 years ago
Read 2 more answers
How long must a pendulum be to have a period of 4.6 5 on Neptune, where g = 11.15 m/s?​
Anon25 [30]

Answer:

5.98 m

Explanation:

T=2\pi \sqrt\frac{L}{g}

T^2=4\pi ^2L/g\\L = gT^2/(4\pi^2) = 11.15*4.6²/(4π²) = 5.98 m

5 0
2 years ago
A student conducts an experiment in which a cart is pulled by a variable applied force during a 2 s time interval. In trial 1, t
fredd [130]

Answer:

The answer is "Including all three studies of 0s to 2s, that shift in momentum is equal".

Explanation:

Its shift in momentum doesn't really depend on the magnitude of its cars since the forces or time are similar throughout all vehicles.

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We use movies and find lips

\to v = v_0 + a t\\\\\to v = v_0 + (\frac{F}{m}) t

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Let's replace the speeds in this equation

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They see that shift is not directly proportional to the mass of cars since the force and time were the same across all cars.

5 0
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H o m o zygous what does it mean
lord [1]

Answer:

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Explanation:

6 0
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Vanyuwa [196]

Explanation:

Since the current flowing through an ideal capacitor is described by equation:

i_{C}=C\frac{dV}{dt}

for voltage across the capacitor constant with time the current is:

i_{C}=\frac{d(Constant)}{dt}=0

Open switch has this characteristics (Constant voltage and zero current).  

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