Window Washer Problem (Forces)

  • Thread starter zm87
  • Start date
  • #1
zm87
4
0
A window washer pulls herself upward using a bucket-pulley apparatus. How hard must she pull downward to raise herself slowly at constant speed? If she increases this force by 10% what will her acceleration be? The mass of the person and bucket is 65 kg.

Need some help, gracias.
 

Answers and Replies

  • #2
HallsofIvy
Science Advisor
Homework Helper
43,021
970
Force= mass * accleration.

If the person is moving at constant speed (no acceleration) that means there is no net force- she is pulling just enough to equal her weight. You are given that her mass is 65 kg. What is her weight?

Now, increase that pull by 10%. Subtract off her weight again to get net force and use "force equals mass times acceleration".
 

Suggested for: Window Washer Problem (Forces)

Replies
10
Views
392
  • Last Post
Replies
14
Views
542
  • Last Post
Replies
7
Views
1K
Replies
15
Views
383
Replies
6
Views
823
Replies
3
Views
375
Replies
17
Views
438
Replies
9
Views
486
Replies
12
Views
661
  • Last Post
Replies
3
Views
258
Top