1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
hodyreva [135]
2 years ago
8

A mass m = 75 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 19.2 m and finally

a flat straight section at the same height as the center of the loop (19.2 m off the ground). Since the mass would not make it around the loop if released from the height of the top of the loop (do you know why?) it must be released above the top of the loop-the-loop height. (Assume the mass never leaves the smooth track at any point on its path.)
Physics
1 answer:
dalvyx [7]2 years ago
4 0

Answer:

The velocity is 19.39 m/s

Solution:

As per the question:

Mass, m = 75 kg

Radius, R = 19.2 m

Now,

When the mass is at the top position in the loop, then the necessary centrifugal force is to keep the mass on the path is provided by the gravitational force acting downwards.

F_{C} = F_{G}

\frac{mv^{2}}{R} = mg

where

v = velocity

g = acceleration due to gravity

v = \sqrt{2gR} = \sqrt{2\times 9.8\times 19.2} = 19.39\ m/s

You might be interested in
Three identical metallic conducting spheres carry the following charges: q = +3.8 μC, q = −2.6 μC, and q = −8.8 μC. The spheres
Kitty [74]

Answer:

-4.1μC is the final charge on the third sphere

Explanation:

From the given data, q1 and q2 are brought into contact as they are both conductors,  as such there will be evenly distribution of charges.

a) charge on each sphere(Q) = q1 + q2 / 2

= +3.8 μC + (- 2.6 μC) / 2 = 1.2μC/2 = 0.6μC

b) Now, one of those two spheres is brought into contact with the third sphere ; Q is brought into contact with q3 = Q + q3 / 2

= 0.6μC - 8.8 μC /2 = -8.2 μC/2

= -4.1μC is the final charge on the third sphere.

6 0
3 years ago
6. DRAW 3 3/8° LINE<br> 7. DRAW A 5* LINE
Fiesta28 [93]

Answer:

Each part so obtained will represent the fraction 1/8 and the number line obtained will be of the form: To mark 3/8; move three parts on the right-side of zero. To mark 5/8; move five parts on the right-side of zero. To mark -1 3/8 i.e. -11/8; move eleven parts on the left-side of zero.

Explanation:

5 0
3 years ago
Metal sphere A is hung from the ceiling by a long, thin string and given a positive charge. An identical sphere B is suspended n
IrinaK [193]

Answer:

A decreases while B increases because the equilebrium only reacts to different sphers of this substance.

Explanation:

7 0
3 years ago
&gt;En cual de las siguientes situaciones la fuerza neta sobre el cuerpo es cero?
ExtremeBDS [4]
La respuesta es "Un avion que vuela al norte con rapidez constante y altitud constante".

Para que la fuerza neta sea 0, la aceleracion debe ser 0, para esto la velocidad debe ser constante.  

Para que la velocidad sea constante el objecto debe estar moviendo con rapidez (magnitud de la velocidad) constante y sin cambiar direccion; ya que la velocidad es un vector asi es que depende en magnitud y direccion.

En las demas opciones la magnitud de la velocidad (rapidez) cambia y/o la direccion.
3 0
3 years ago
Which condition in a nebula would prevent nuclear fusion?
Tanzania [10]
<span>A decrease in the overall volume of gases namely hydrogen would prevent nuclear fusion in a nebula.</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • Explain how the "natural frequency" of objects must be considered/analyzed in places like concert halls and airplanes.
    9·1 answer
  • What energy transformation occurs when a skydiver first jumps from a plane?
    8·2 answers
  • A point P1 is located by the vector A = (3.74)î + (1.64)ĵ and a point P2 is located by the vector B = (1.60)î + (3.66)ĵ. The vec
    12·1 answer
  • Unbalanced contact forces between several object would result in ?
    8·1 answer
  • A pendulum on plant X is 0.25 meters long and the period is 4 seconds. What is “g” on Planet X?
    13·1 answer
  • Which object that attracts iron is?
    11·1 answer
  • What is an example of potential energy to kinetic energy?
    10·2 answers
  • Think about the sound waves and light waves that are transmitted when you use a computer, watch TV, or use your phone. How are t
    7·1 answer
  • Please help with the working of this question
    6·1 answer
  • A car is traveling at 20 km in 15 minutes. What is its average velocity
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!