How high?
Draw it.
h = L - L cos 33.6 = L(1-cos33.6)
= 3(1-.833) = .501 meters up
Potential energy increase = m g h
= 25 (9.81) (.501)
Ke = (1/2)(25) v^2 = 25(9.81)(.501)
cancel the mass and
solve for v = sqrt(2 g h) as usual :)
A father pulls his son, whos mass is 25 kg and who is sitting on a swing with ropes of length 3 meters, backward until the ropes make an angle of 33.6 degrees with respect to the vertical. He then releases his son from rest. What is the speed of the son at the bottom of the swinging motion?
2 answers
the answer is wrong
it will equal = 3.135
it will equal = 3.135