(a) What is the weight of a 5.78 kg backpack at the surface of the Earth? 56.7 N
ID: 1709292 • Letter: #
Question
(a) What is the weight of a 5.78 kg backpack at the surface of the Earth?
56.7 N ( I understand this problem after some time :) )
(b) What is the weight of the same backpack at the surface of the Moon where the acceleration due to gravity is only 1.6 m/s2?
9.37 N (as well as this problem)
(c) If the backpack is at the surface of the Earth, and if a net force of 8 N is applied to the backpack, what is the amount of acceleration of the backpack?
(Not sure here)
m/s^2
I was thinking A = Fnet/m
Fnet being the total force on the object being equal to G(mass of the earth)/(radius of the earth)^2
(I know it isn't as simple as adding 8N to the weight of backpack at the surface of the earth, if I divide by the net force that isn't adding the net force to the weight...Please Help)
(d) If the backpack is at the surface of the Moon, and if the same net force is applied to the backpack, what is the amount of acceleration of the backpack?
(If I don't understand C of course I am confused on this problem as well, thank you for your help in advance I can figure out where to go with this problem if I understand C)
m/s2
Please explain to me so that I understand for test
Explanation / Answer
a) because the weight is 5.78 kg, and you know the acceleration due to gravity on the surface of earth will always be 9.81 m/s^2, you can solve for this b) same as above but with gravity = 1.6 m/s^2, you got this from what you said above just going over it a bit c) The net force on any object means the sum of all the forces, including the gravitational force, so the total force will be 8 N. This means you can solve for the total acceleration by just simply knowing the mass and using F = m*a F=m*a F/m=a (8 N)/(5.78 kg) = 1.384 m/s^2 d) For this problem, you will actually come out with the same answer as above, because the mass will not change and neither will the net force. Any further questions i can answer if you either comment on this or just send me a message.
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