Tied mass with angular velocity

Click For Summary
SUMMARY

The discussion focuses on a physics problem involving a small ball with a mass of 0.1 kg tied to a non-stretchable thread, moving on a smooth horizontal plane. The thread is pulled with a force of 0.8 Newtons, maintaining a constant radius of 0.4 m. When Harry increases the pulling force to 4 Newtons, the radius decreases to 0.1 m. The key calculations required are the work done by Harry and the work done by the ball during this process.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Knowledge of work-energy principles
  • Familiarity with circular motion concepts
  • Basic algebra for calculating work done
NEXT STEPS
  • Calculate the work done by Harry using the formula W = F × d
  • Explore the concept of centripetal force in circular motion
  • Learn about the relationship between force, mass, and acceleration
  • Investigate the implications of non-stretchable threads in physics problems
USEFUL FOR

Students studying physics, educators teaching mechanics, and anyone interested in understanding work and energy in circular motion scenarios.

Hafid Iqbal
Messages
15
Reaction score
0
http://img221.imageshack.us/img221/522/fisikaumn.jpg
A small ball (mass = 0,1 kg) tied to a non-stretchable thread moves over a smooth horizontal plane. The other end of the thread is being drawn into a hole O with a 0,8 Newton force so that the ball moves with a constant radius 0,4 m
And then Harry pull the thread with a constant force 4 Newton so that the ball moves come near to hole O until its radius is 0,1 m

a. Work done by Harry = ... J
b. Work done by that ball = ... J

Thank you very much
 
Last edited by a moderator:
Physics news on Phys.org
Anyone? :(
 

Similar threads

Replies
14
Views
3K
  • · Replies 2 ·
Replies
2
Views
999
Replies
10
Views
3K
Replies
335
Views
17K
  • · Replies 32 ·
2
Replies
32
Views
3K
Replies
2
Views
2K
  • · Replies 9 ·
Replies
9
Views
3K
Replies
26
Views
4K
  • · Replies 5 ·
Replies
5
Views
2K
Replies
38
Views
4K