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
Helen [10]
3 years ago
12

if a torque of 55.0 N/m is required and the largest force that can be exerted by you is 135 N what is th e length of the lever a

rm that must be used?
Physics
1 answer:
Whitepunk [10]3 years ago
7 0

Answer:

r=0.41m

Explanation:

Torque is defined as the cross product between the position vector ( the lever arm vector connecting the origin to the point of force application) and the force vector.

\tau=r\times F

Due to the definition of cross product, the magnitude of the torque is given by:

\tau=rFsin\theta

Where \theta is the angle between the force and lever arm vectors. So, the length of the lever arm (r) is minimun when sin\theta is equal to one, solving for r:

r=\frac{\tau}{F}\\r=\frac{55\frac{N}{m}}{135N}\\r=0.41m

You might be interested in
Nvm i got the answer but <br> free points
faust18 [17]

Answer:

thank you 谢谢

Explanation:

8 0
3 years ago
Read 2 more answers
A person is singing in the shower. They notice that as certain notes become very loud, the shower walls vibrate. Which statement
AysviL [449]

Answer:

the note is one of the harmonic frequencies for the shower.

I just took the quiz, this is correct. Hope this helps:)

Explanation:

8 0
3 years ago
one of the ways, covered in the article and in class, that we charged an object was rubbing it against carpet on the floor true
astraxan [27]

Answer:

It is possible to statically charge objects by rubbing it against carpet fibers, but I'm not sure if that was in the article that you read.

Explanation:

Static charge can build up via carpet fibers.

5 0
2 years ago
A person is walking briskly in a straight line. The figure shows a graph of the person’s position x as a function of time t. Wha
Nina [5.8K]

The average velocity over the interval 6\le t\le 10 is

\dfrac{x(10)-x(6)}{10\,\mathrm s-6\,\mathrm s}=\dfrac{6\,\mathrm m-2.67\,\mathrm m}{4\,\mathrm s}=0.8325\,\dfrac{\mathrm m}{\mathrm s}

where x(t) is the person's position at time t. I've taken the liberty of estimating x(6)\approx2.67\,\mathrm m. The closest choice among the answers is 0.8\,\dfrac{\mathrm m}{\mathrm s}.

7 0
3 years ago
An electromagnetic wave traveling in a
siniylev [52]
Answer would be c as shown in the photo

3 0
3 years ago
Other questions:
  • A student will study german at last 3 years
    8·1 answer
  • When did diesel locomotives replace steam locomotives?
    11·1 answer
  • An air bubble has a volume of 1.70 cm³ when it is released by a submarine 115 m below the surface of a lake. What is the volume
    10·1 answer
  • An archerfish, peering from just below the water surface, sees a grasshopper standing on a tree branch that's just above the wat
    9·1 answer
  • How must a force be applied to cause resonance?
    7·1 answer
  • Tension is actually a force that tends to
    7·2 answers
  • The symbol for speed is v and the symbol for time is t. If v = 13t + 11, then what is t?
    6·1 answer
  • A vinyl record is played by rotating the record so that an approximately circular groove in the vinyl slides under a stylus. Bum
    8·1 answer
  • A 6.50 meter high cylinder is filled with alcohol(density =806 kg/m^3). What is the pressure at the bottom of the cylinder?
    13·1 answer
  • PHYSICS PLEASE HELP
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!