Question

I WILL GIVE YOU A MEDAL.
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1.A backpack has a mass of 50 kg. what is it's weight on earth?

2.A satellite with a mass of 400kg has a weight of 4000N on a newly discovered moon of saturn. What is the gravitational strength of the newly discovered moon?

3.Calculate the forece on a toy helicopter that has a mass of 12kg and an acceleration of 4m/s^2

Answer 1

1) Weigh W of an object, is given by the subsequent formula:
W=m*g
where m is the mass of that object, and g is the gravity, namely, g=9.81 m/sec^2

Answer 2

2) the requested gravitational strength G, is given by the subsequent ratio:
\[G = \frac{F}{M}\]
where F= 4000 Newtons, and M=400 Kg

Answer 3

3) According to the second principle of Newton, we have that the requested force F, is given by the subsequent formula:
\[F = m \times a\]
where:
m=12 Kg, and a= 4 m/sec^2