- #1
physicsisgrea
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Homework Statement
Please refer to the figures. (The first one is multiple-choice, the latter is structured).
Homework Equations
For the first problem:
u = √(2gH)
x = uxsinθt + [itex]\frac{1}{2}[/itex]gsinθt2
uycosθt = [itex]\frac{1}{2}[/itex]gcosθt2 and maybe others
u = initial velocity
x = x-displacement (along the slope)
y = y-displacement (perpendicular to slope)
For the second:
FG= Gm1m2 / r2
m are masses
r is radius
FG = gravitational attractive force between two masses
[itex]G\ =\ 6.673(10)\ \times\ 10^{-11}\ m^{3} kg^{-1} s^{-2}[/itex]
and maybe others
The Attempt at a Solution
Sorry, I've been doing these two problems for hours, still can't get the answers:
For the first, I only found that the time between the release and the first impact might be √(2H/g).
For the second problem I even don't any idea about how to solve it:(
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