Calculating angular displacement of clockhands

Click For Summary
To calculate the angular displacement of clock hands in one hour, the second hand completes 360 degrees or 2π radians every minute, resulting in 360 degrees per minute. The minute hand moves 360 degrees or 2π radians every hour, while the hour hand moves 30 degrees or π/6 radians every hour. Therefore, the angular displacements are 360 radians for the second hand, 60 radians for the minute hand, and 30 radians for the hour hand in one hour. Understanding these calculations helps in solving similar problems involving circular motion.
DeeAussie
Messages
4
Reaction score
0

Homework Statement


What is the a.d of each of the following hands of a clock in 1h?
the second and?
the minute hand?
the hour hand?


Homework Equations


That's what I'm looking for


The Attempt at a Solution


I'm having trouble getting it on paper, just a description of how one of you might crack this would be wonderful.


thank you
 
Physics news on Phys.org
Going around a circle exactly once corresponds to 2 \pi radians (of angular displacement). Going around the circle twice is twice that. Going half way around the circle is 1/2 that, and so on.

So what's the angular displacement (i.e. how many radians are traversed) of a hand that goes around exactly once? One that goes around 60 times? And 60 x 60 times?
 

Thread 'Magnitude of buoyant force in fluids of different densities'

The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?
View full post »

Similar threads

Question on circular motion, finding out the angular displacement in a clock.
  • · Replies 3 ·
Replies
3
Views
5K
Webpage title: Understanding Angular Displacement in Circular Motion
  • · Replies 3 ·
Replies
3
Views
2K
Using the angular momentum principle for 2 pucks
  • · Replies 3 ·
Replies
3
Views
3K
Are These Physics Questions Correct in English and Science?
  • · Replies 6 ·
Replies
6
Views
2K
Calculating Angular Displacement of CD with Radius 6.0 cm
  • · Replies 1 ·
Replies
1
Views
2K
What is the angular displacement of a thrown ball
  • · Replies 4 ·
Replies
4
Views
3K
How Does a Spring Impact the Angular Frequency of a Pendulum?
  • · Replies 15 ·
Replies
15
Views
6K
Calculate the angular acceleration of a hand - no time given
  • · Replies 10 ·
Replies
10
Views
2K
What Causes Discrepancies in Calculating Initial Angular Velocity?
  • · Replies 2 ·
Replies
2
Views
2K
Calculate the displacement? (Projectile motion problem)
  • · Replies 3 ·
Replies
3
Views
2K