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Am i going right?

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

2. Homework Equations
centripetal acceleration = v2/r
Fc=mv2/r

3. 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
 

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