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
Dovator [93]
3 years ago
8

A 60 cm diameter wheel accelerates from rest at a rate of 7 rad/s2. After the wheel has undergone 14 rotations, what is the radi

al component of the acceleration (in m/s2) on the edge the wheel?
Physics
1 answer:
Mamont248 [21]3 years ago
6 0

Answer:

a=368.97\ m/s^2

Explanation:

Given that,

Initial angular velocity, \omega=0

Acceleration of the wheel, \alpha =7\ rad/s^2

Rotation, \theta=14\ rotation=14\times 2\pi =87.96\ rad

Let t is the time. Using second equation of kinematics can be calculated using time.

\theta=\omega_it+\dfrac{1}{2}\alpha t^2\\\\t=\sqrt{\dfrac{2\theta}{\alpha }} \\\\t=\sqrt{\dfrac{2\times 87.96}{7}} \\\\t=5.01\ s

Let \omega_f is the final angular velocity and a is the radial component of acceleration.

\omega_f=\omega_i+\alpha t\\\\\omega_f=0+7\times 5.01\\\\\omega_f=35.07\ rad/s

Radial component of acceleration,

a=\omega_f^2r\\\\a=(35.07)^2\times 0.3\\\\a=368.97\ m/s^2

So, the required acceleration on the edge of the wheel is 368.97\ m/s^2.

You might be interested in
An object is moving in a straight line at a constant speed. A resultant force begins to act upon the object. State the ways in w
sergiy2304 [10]

Answer:

accelerate / increase speed OR decelerate / decrease speed OR stop B1

change direction / move in a curve o.w.t.t.e

Explanation:

accelerate / increase speed OR decelerate / decrease speed OR stop B1

change direction / move in a curve o.w.t.t.e

8 0
3 years ago
When white light passes through a prism, a red light is least changed in direction? True or false
Goryan [66]

True because the picture below proves this....

* from which red color is least deviated and violet most.

* Hopefully this helps:) Mark me the brainliest:) !!

<em>∞ 234483279c20∞</em>

4 0
3 years ago
PLEASE HELP!!! 25 pts!!
mina [271]

Answer:

The slope of the graph is what you need. That tells you the speed not the velocity. In order to find the velocity you would also need to know the direction of the motion.

3 0
3 years ago
Read 2 more answers
Timed! I would really appreciate some help! thank you!
GenaCL600 [577]

Answer:

x = 5[km]

Explanation:

We must convert the time from minutes to hours.

t=30[min]*\frac{1h}{60min}= 0.5[h]\\

We know that speed is defined as the relationship between space and time.

v=x/t

where:

x = space [m]

t = time = 0.5 [h]

v = velocity [m/s]

Now replacing:

x = 10[\frac{km}{h} ]*0.5[h]\\x=5[km]

4 0
2 years ago
Two resistances of 100ohms and 0 ohms were connected in parallel. What is the overall resistance
Inga [223]

Answer:

20 ohms,100*2/10=20

Explanation:

since it as to be in parallel arrangement and connected in side by side due to same p.d in a cross each resistor

6 0
3 years ago
Other questions:
  • What is the s. i unit of current​
    15·2 answers
  • An underwater scuba diver sees the Sun at an apparent angle of 43.0° above the horizontal. What is the actual elevation angle of
    10·1 answer
  • Why are the Inner Planets composed mostly of rock and the Outer Planets<br> composed mostly of gas
    11·1 answer
  • When water freezes, it expands. what does this say about the density of ice compared with the density of water?
    11·1 answer
  • What generates the magnetic field that surrounds a wire carrying an electric current?
    11·1 answer
  • For study, the Earth can be divided into three parts:
    15·2 answers
  • Technician A says that bursting of clutch friction facings is often caused by coasting a truck with the clutch pedal depressed.
    6·1 answer
  • An object is represented by the dot on a motion map. What is the best description for the motion of this object? The object is m
    8·2 answers
  • The difference between a molecule and a compound is that a compound is made up of atoms from . A chemical change creates a new .
    6·2 answers
  • A 75 watt light bulb is plugged into a 15 volt outlet. What is the current flow?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!