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
densk [106]
2 years ago
10

The triceps muscle in the back of the upper arm extends the forearm. This muscle in a professional boxer exerts a force of 2615

N with an effective perpendicular lever arm of 2.85 cm , producing an angular acceleration of the forearm of 110.0 rad / s2 . What is the moment of inertia of the boxer's forearm?
Physics
1 answer:
mart [117]2 years ago
7 0

Answer:

0.68 kg-m²

Explanation:

F = Force applied by the muscle = 2615 N

r = effective perpendicular lever arm = 2.85 cm = 0.0285 m

α = Angular acceleration of the forearm = 110.0 rad/s²

I  = moment of inertia of the boxer's forearm = ?

Torque is given as

τ = I α                                   eq-1

Torque is also given as

τ = r F                                   eq-2

using eq-1 and eq-2

r F =  I α

(0.0285)(2615) = (110.0) I

I = 0.68 kg-m²

You might be interested in
Consider a 100 g object dropped from a height of 1 m. Assuming no air friction (drag), when will the object hit the ground and a
Katyanochek1 [597]

Answer:

speed and time are Vf = 4.43 m/s and  t = 0.45 s

Explanation:

This is a problem of free fall, we have the equations of kinematics

      Vf² = Vo² + 2g x

As the object is released the initial velocity is zero, let's look at the final velocity with the equation

      Vf = √( 2 g X)

      Vf = √(2 9.8  1)

      Vf = 4.43 m/s

This is the speed with which it reaches the ground

 

Having the final speed we can find the time

      Vf = Vo + g t

       t = Vf / g

       t = 4.43 / 9.8

       t = 0.45 s

This is the time of fall of the body to touch the ground

3 0
3 years ago
Science help please!
OLga [1]

Answer:

104 N

Explanation:

m = 1300 kg

a = 0.08m/s^2

F = 1300*0.08

F = 104 N

Newtons is the unit of force.

3 0
2 years ago
Describe the shapes and designs that are most aerodynamic.
Bas_tet [7]
The teardrop could be an example as it was designed for that purpose, and most notably planes and such aero traveling vehicles
4 0
3 years ago
Read 2 more answers
Linear expansivity of steel
Anuta_ua [19.1K]

<em>Steel: 11.0 – 12.5</em>

<em>T̶e̶t̶s̶u̶t̶e̶t̶s̶u̶ ̶T̶e̶t̶s̶u̶t̶e̶t̶s̶u̶</em>

Thanks,

<em>Deku ❤</em>

5 0
3 years ago
Please please help me
Illusion [34]

Answer:

amitude doesnt change

Explanation:

6 0
3 years ago
Other questions:
  • Which statements are false? Money comes in different forms. Money is indivisible. M1 includes notes, coins, and funds in checkab
    11·2 answers
  • A wire of length 26.0 cm carrying a current of 5.77 mA is to be formed into a circular coil and placed in a uniform magnetic fie
    10·1 answer
  • The water in a lake is at 5 °C. A diver measures the pressure of the water at two different depths in the lake. He repeats the m
    15·1 answer
  • Can someone please explain to me why the net force of the ball changes in the Y direction and not the X Direction? I made little
    7·1 answer
  • The kinetic energies of particles in a sample of matter are increasing. This sample is most likely
    6·2 answers
  • Need help ASAP
    9·1 answer
  • A plumb bob is hanging from the ceiling of a car. If the car moves with an acceleration a, what is the angle made by the string
    12·1 answer
  • How much power is needed to produce 500 joules of work if 20 watts are used?
    8·2 answers
  • Which one of the following statements is true: The reactive power is the power dissipated in the form of heat by the network. Th
    14·1 answer
  • a large beaker of water is filled to its rim with water. a block of wood is then carefully lowered into the beaker until the blo
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!