Am i going right?

  • Thread starter natural
  • Start date
  • #1
26
0

Homework Statement


A child (mass=25kg) moves with a speed of 1.50ms-1 when 7.8m from the centre of a merry-go-round. Calculate
a) the cetripetal acceleraton of the child
b) th net horizontal force exerted on the child

Homework Equations


centripetal acceleration = v2/r
Fc=mv2/r

The Attempt at a Solution



centripetal acceleration = (150)2(squared)/7.8
=0.29m/s2

do i work out the horizontal force exerted on the child by using Fc=mv2/r?
25*(150)2(squared)/7.8 =7.21*10^4 N
 

Answers and Replies

  • #2
225
0
correct. Good job.
 
  • #3
26
0
gee thanx for your time
 

Related Threads on Am i going right?

Replies
1
Views
909
  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
5
Views
952
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
2
Views
925
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
4
Views
1K
Top