Answer:

Explanation:
given,
mass of seesaw,m= 50 kg
length of seesaw, d = 3 m
mass of person on one end, m₁ = 60 Kg
mass of person on another end, m₂ = 86 Kg
position of center of mass = ?
System is in equilibrium
Clockwise moment is equal to anticlockwise moment.





hence, the position of center of mass from the fulcrum is 0.78 m on 60 Kg mass side.
"An object in motion stays in motion, and an object at rest remains at rest unless acted upon by an unbalanced force" Said Sir Isaac Newton
Hope that helped! :)
Answer:
According to studies, the milky way is approximately, "170,000–200,000 light-years (52–61 kpc) in diameter and, on average, approximately 1,000 ly (0.3 kpc) thick."
With that being said, it is safe to say that the dimensions are somewhere around 100,000 by 1,000
Answer:
18,316.2
Explanation:
The formula for GPE is mgh, where
M = Mass of the object
G = Acceleration due to gravity (9.8 m/s^2 on Earth)
H = Height above ground
890 × 9.8 × 2.1 = 18,316.2
Answer:
Part a)
H = 26.8 m
Part b)
error = 7.18 %
Explanation:
Part a)
As the stone is dropped from height H then time taken by it to hit the floor is given as

now the sound will come back to the observer in the time

so we will have


so we have

solve above equation for H

Part b)
If sound reflection part is ignored then in that case



so here percentage error in height calculation is given as

