151.9j
Explanation:
PE=1/2kx^2
PE=1/2(980)(.50)= 245j
PE=(1/2)(980)(.81)= 396.9j
396.9- 245= 151.9j
W=MG
w is weight
m is mass
g is gravity
W=(100 kg)(9.8 m/s)
W= 980 N
hope this helps
Answer:
newtons law of force
newtons law of force explains that something may or can or canot move depending on the objexts mass.
Logitudinal waves are the waves which displacement of the medium is in the same direction as , or oppositemdirection to ,the direction of propagation of the wave.
