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
sasho [114]
3 years ago
11

Say you want to make a sling by swinging a mass M of 1.7 kg in a horizontal circle of radius 0.048 m, using a string of length 0

.048 m. You wish the mass to have a kinetic energy of 14.0 Joules when released. How strong will the string need to be
Physics
1 answer:
DENIUS [597]3 years ago
3 0

Answer:

Tension in the string is equal to 58.33 N ( this will be the strength of the string )

Explanation:

We have given mass m = 1.7 kg

radius of the circle r = 0.48 mF=\frac{mv^2}{r}=\frac{1.7\times 4.05^2}{0.48}=58.33N

Kinetic energy is given 14 J

Kinetic energy is equal to KE=\frac{1}{2}mv^2

So \frac{1}{2}\times 1.7\times v^2=14

v^2=16.47

v = 4.05 m/sec

Centripetal force is equal to F=\frac{mv^2}{r}=\frac{1.7\times 4.05^2}{0.48}=58.33N

So tension in the string will be equal to 58.33 N ( this will be the strength of the string )

You might be interested in
What is the index of refraction of a material in which the speed of light is 7.50% slower than the speed of light in vacuum?
Inessa [10]

Answer:

The value is n = 1.081

Explanation:

From the question we are told that

   The speed of in a vacuum is c = 3.0 *10^{8} \  m/s

    The speed of light in the material is  v  =  c -0.075c = 0.925 c =  0.925 * 3.0*10^{8}  = 2.775 *10^{8} \ m/s

   Generally the reflection of the material is mathematically represented as

             n = \frac{c}{v}

=>    n = \frac{3.0*10^{8}}{2.775 *10^{8}}

=>    n = 1.081

8 0
3 years ago
For every O ion, two Na ions are needed to balance charges. Which ratio represents the relationship between Na and O? 1 Na:1 O 1
quester [9]

For every O ion, two Na ions are needed to balance charges. Which ratio represents the relationship between Na and O?


2 Na:1 O


6 0
3 years ago
Read 2 more answers
Which of the following is a luminous object?<br> the Moon<br> Jupiter<br> a comet<br> the Sun
babunello [35]
The Sun is a luminous object. 
3 0
3 years ago
Read 2 more answers
If the work done to stretch an ideal spring by 4.0 cm is 6.0J, what is the spring constant (force constant) of this spring?
cluponka [151]
As AL2006 correctly pointed out the formula is 1/2 kx^2.  I was thinking of force and work is the integral of force over the distance applied.  So now
W= \frac{1}{2}k x^{2}
and
\frac{2*6.0}{0.04^{2} } = k =7500 \frac{J}{m^{2}}
8 0
3 years ago
Read 2 more answers
Two flat conductors are placed with their inner faces separated by 8 mm. If the surface charge density on one of the inner faces
miskamm [114]

Answer:

= 0.0298V

Explanation:

Electric field between two conductor = σ / ε₀

σ = 33pC/m²

= 33 × 10⁻¹²C/m²

ε₀ = 8.85 × 10 ⁻¹²C²/Nm²

E = 33 × 10⁻¹² /  8.85 × 10 ⁻¹²

  = 3.7288N/C

potential difference between two conductors = Ed

where d = 8mm = 8 × 10 ⁻³m

V = 3.7288 ×  8 × 10 ⁻³

   = 29.83 × 10 ⁻³

    = 0.0298V

4 0
3 years ago
Other questions:
  • You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor.
    10·1 answer
  • List the three products of radioactive decay from the most penetrating to the least penetrating
    6·1 answer
  • PLEASEEEEEE HELP
    9·1 answer
  • Which of the following units could be used for the average speed of an object? A. kilometers per hour (km/hr) B. miles per hour
    7·1 answer
  • At t1 = 2.00 s, the acceleration of a particle in counterclockwise circular motion is 6.00 i + 4.00 j m/s2 . It moves at constan
    14·1 answer
  • A 10-meter rope is lying on the floor and has a mass force of 20 N. How much work is required to raise one end of the rope to a
    5·1 answer
  • Why are scientific theories modified, but seldom discarded?
    6·2 answers
  • 1. A stone of mass 0.8 kg is attached to a 0.9 m long string. The string will break if the tension exceeds 60 N. The stone is wh
    11·1 answer
  • A_ is a cut made through the wood
    11·2 answers
  • What is the force on a person’s hand, which is using a rope to accelerate a 5 kg block upward with an acceleration of 2.2 m/s 2
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!