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
adoni [48]
3 years ago
12

Two blocks are placed at the ends of a horizontal massless board, as in the drawing. The board is kept from rotating and rests o

n a support that serves as an axis of rotation. The block on the right has a mass of 2.8 kg. Determine the magnitude of the angular acceleration when the system is allowed to rotate.
Physics
1 answer:
Andrew [12]3 years ago
7 0

Answer:

The magnitude of the angular acceleration ∝ = \frac{rxF}{2.8[tex]r^{2}}[/tex]

Explanation:

The angular acceleration ∝ is equal to the torque (radius multiplied by force) divided by the mass times the square of the radius. The magnitude of angular acceleration ∝ will have the equation above but we have to replace the mass in the equation by 2.8kg as stated.

You might be interested in
You are watching an archery tournament when you start wondering how fast an arrow is shot from the bow. Remembering your physics
olga nikolaevna [1]

Answer:112.82 m/s

Explanation:

Given

range of arrow=68 m

Angle=3^{\circ}

as the arrow travels it acquire a vertical velocity v_y

v_y=u+at

v_y=0+9.81\times t-------1

Range is given by

R=ut

where u=initial velocity

68=u\times t

t=\frac{68}{u}

substitute the value of t in eqn 1

v_y=9.81\times \frac{68}{u}

v_y\times u=9.81\times 68=667.08--------2

and tan(3)=\frac{v_y}{u}

v_y=utan(3)=0.0524u

substitute it in 2

0.0524 u^2=667.08

u^2=12,728.644

u=112.82 m/s

6 0
3 years ago
Who invented the first telescope​
mylen [45]

Answer:

Hans Lipperhey

....................................

5 0
2 years ago
Read 2 more answers
Which type of environmental science career involves collecting information about how human events impact the environment?
SVEN [57.7K]
C. environmental engineer
4 0
3 years ago
Read 2 more answers
The rock starts as a solid and then..
alina1380 [7]

Answer:

they stay a solid

Explanation:

breaks apart do to whether such as erosion

7 0
3 years ago
6. A ball rolled 125 m from the top of a hill to the bottom of a hill. How long
leva [86]
Time = distance / speed
T = 125/ 5
T = 25 meters per second
7 0
3 years ago
Other questions:
  • The left plate of a parallel plate capacitor carries a positive charge Q, and the right plate carries a negative charge -Q. The
    5·1 answer
  • What is the job of chlorophyll in photosynthesis?
    6·2 answers
  • What are the three factors that affect surface ocean currents
    6·1 answer
  • The ability to do work is called what?
    14·2 answers
  • What are important physics points when bungee jumping :)
    5·1 answer
  • What is the net force needed to lift a full grocery sack (weighing 210N) uniformly?
    10·1 answer
  • Demonstrate the path light takes when traveling through the convex lens. Include an explanation of the drawing.
    11·1 answer
  • Two horizontal forces act on a 1.4 kg chopping block that can slide over a friction-less kitchen counter, which lies in an xy pl
    13·1 answer
  • Potential energy is the energy an object has due to its:
    13·2 answers
  • determine the approximate time, compass heading, distance, and fuel consumed during climb cruising altitude 6,500
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!