Torque and Force How much torque do you need to apply to a 1kg disk of radius 10cm to get an angular acceleration of 3 rads/s2. How much force do you need to exert on the edge of the disk to achieve this torque? Assume the disk is rotating about an axis through its center perpendicular to its face, and you are applying the force perpendicular to the radius of the desk, as you were spinning thre disk with your hand.

Question
Asked Oct 21, 2019
41 views

Torque and Force 

How much torque do you need to apply to a 1kg disk of radius 10cm to get an angular acceleration of 3 rads/s2. How much force do you need to exert on the edge of the disk to achieve this torque? Assume the disk is rotating about an axis through its center perpendicular to its face, and you are applying the force perpendicular to the radius of the desk, as you were spinning thre disk with your hand. 

check_circle

Expert Answer

Step 1

The disk is rotating about an axis through its center perpendicular to the face of the disk.

Step 2

The equation for the moment of inertia of a disk rotating about an axis perpendicular to the face of the disk is:

help_outline

Image Transcriptionclose

IMR2.) I is the moment of inertria of the disk, M is the mass of the disk and R is the radius of the di sk

fullscreen
Step 3

Substitute 1kg for M and 10cm ...

help_outline

Image Transcriptionclose

2 x1kgx10x10 I x2m -5x103 kgm2

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Physics

Related Physics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: The sun has a mass of 1.99 X 10 ^30 kg and has a radius of 693600 km.  What is the acceleration due ...

A: The acceleration due to gravity on the surface of the sun is,

question_answer

Q: You are given a 12 V battery and four resistors: 22 W, 39 W, 47 W, and 68 W. Design (sketch) a circu...

A: A circuit with a point 3.75V is given in figure 1,

question_answer

Q: 5. A steam catapult launches a jet aircraft from the aircraft car￾rier John C. Stennis, giving it a ...

A: Sub part (a)Kinematics equation,

question_answer

Q: A golf ball of mass 0.050 kg is at rest on the tee. After being struck, its velocity is 102 m/s. Hel...

A: Given:Mass of the ball = 0.050 kgVelocity of the ball after being struck = 102  m/sTime of contact =...

question_answer

Q: Six circuits containing a battery and two or more bulbs are shown here. D. What are the total resist...

A: i)Bulb and B are connected in parallel combination in circuit 2. Write the equation for total resist...

question_answer

Q: Two wires are tied to the 400 g sphere. The sphere revolves in a horizontal circle at a constant spe...

A: Given:Mass of the sphere, m = 400 g = 0.4 kgVelocity of the sphere, v = 7.1 m/s

question_answer

Q: A ball player catches a ball 3.34 s after throwing it vertically upward. With what speed did he thro...

A: Time taken by the ball to go up and down is T=3.34sTime taken by the ball to go up is t = 3.34/2 =1....

question_answer

Q: How do you solve this relative motion exercise?

A: Given:

question_answer

Q: Does a beat alternate between near silence and loudness? or vary in pitch in constant loudness?

A: A beat is an interference pattern between two sounds of slightly different frequencies.