216

Written Assignment 4

 

 

1.     Explain the difference between linear speed and rotational speed. Include formula difference and how rotational speed is changed to linear speed.

2.    A bicycle has wheels with a 30-centimeter radius. If smaller wheels with a 25-centimeter radius are installed, what is the change in linear speed of the bicycle if the wheels rotate at 1 revolution per second?



3.  In terms of rotational inertia, explain why: Rotational Inertia is the quantity of how much torque it takes to get an object rotating. It depends upon the mass and distance.

 



4.             Answer the following questions:

 

a.     Explain how skaters can quickly go from a slow to fast spin and vice versa.

b.    What happens to their angular velocity and moment of



inertia?

c.     Is an external torque required? Explain.

.



5.             What is a gyroscope and how is it used as a navigational aid?



6.             To tighten a bolt, you push with a force of 80 Newtons at the end of a wrench handle that is 0.25 meters from the axis of the bolt.

 

a.     What torque are you exerting?

b.    If you move your hand inward to be only 0.10 meters from the bolt, what force do you have to exert to achieve the same torque

c.    Do your answers depend on the direction of your push relative to the direction of the wrench handle? 

 

 

 


Question Field

Asked by hallgeorge
5 years ago
NO ANSWERS YET
RELATED QUESTIONS
359 Rank 1213 Views
 Astron 4a

Asked by kimberlytaylor 5 years ago

974 Rank 623 Views
 Physics Lab

Asked by manderson 5 years ago

820 Rank 1268 Views
 Physic Lab Report

Asked by howellmartin 5 years ago

302 Rank 769 Views
 No Title

Asked by rachelbaker 5 years ago

37 Rank 351 Views
 Exam Physics

Asked by cglenn 5 years ago

415 Rank 379 Views
 Module 2 (2)

Asked by alexis81 5 years ago

777 Rank 256 Views
 No Title

Asked by george19 5 years ago

41 Rank 1045 Views
 Physics Report

Asked by david36 5 years ago

326 Rank 319 Views
 One Week Of Class Content

Asked by bholt 5 years ago