Practice Problems
Normal Forces Advanced
Page Directions
The numerical values in this worksheet are randomly generated allowing students the opportunity to conveniently practice, and drill, common situations.
Before beginning any given worksheet, please look over all of the questions and make sure that there are
no duplicate
answers shown for the same question. If duplicates are present simply refresh the page until every answer is unique.
In order to check an answer
(even when you are just starting the worksheet on Question 1)
it is necessary to
any questions that you have not answered. Once you start submitting answers, the page may be checked as many times as necesasary without changing the randomized answers. Relevant scoring will be provided at the top of the page only when you answer all of the questions on your original submission.
Directions:
On this worksheet you will be asked to calculate the normal force acting on the stated object depending on a variety of situations dealing with
horizontal circular motion
and
vertical circular motion
.
omit
Question 1
What is the normal force on a 80-kg passenger who is riding in a roller coaster as it passes over the top of a 39-meter radius loop-the-loop while traveling at a speed of 20.5 m/sec?
80 N
the passenger would feel no
normal force against the seat
864 N
784 N
1648 N
omit
Question 2
If the roller coaster track instead passed along the inside of the loop-the-loop in
Question #1
, what normal force would they now feel?
the passenger would feel no
normal force against the seat
80 N
1564 N
1648 N
864 N
omit
Question 3
A 3-kg box is held against the outer wall of a gravitron having a radius of 8 meters as shown in the image below.
How fast must the gravitron be rotating, in revolutions per minute, if the normal force is to equal the box's weight?
8.85 rpm
84.55 rpm
omit
Question 4
What is the normal force acting on a 168-kg motorcycle traveling at 31 m/sec through a 39º banked curve of radius 280
577 N
742 N
1646 N
916 N
omit
Question 5
A parent releases her 28-kg child at an angle of 39º from the vertical. If the swing is 3.7 meters long, how large is the normal force exerted on the child by the swing's seat as she passes through the lowest point in her ride?
152 N
453 N
122 N
274 N
397 N
omit
Question 6
PhysicsLAB
Copyright © 1997-2024
Catharine H. Colwell
All rights reserved.
Application Programmer
Mark Acton