a child is sliding down a slide at the playground. is the mechanical entertainment conserved? why or why not?
2 answers:
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Answer:
Explanation:
Given
Required
Determine the mass of the ball
This question will be answered using Newton's second law of motion.
Which states that
Substitute values for Force and Acceleration
Make Mass the subject
--- (approximated)
Answer:
x=1.25m
Explanation:
The <em>Center of mass </em>of the system is defined as the point where whole mass of the body is appeared to be concentrated.
The center of mass of the system is given by
x=
where m1 is mass of man =60 kg
m2 mass of board =20 kg
let the man be at the origin x1 =0 , x2 =5m
by substituting in above formula
x = =
=1.25 m
x=1.25m
So the center of mass of the system is at 1.25 m from man.
