Answer:
The angular momentum of the system is 0.18kgm²/s
Explanation:
L = angular momentum of the particle 1 + angular momentum of the particle 2
L = ml²ω + ml²ω
L = 2ml²ω
Given that,
m = 500g are connected by a massless cord
=0.500kg
l = 30cm
= 0.30m
angular speed ω = 2.0 rev/s
angular momentum of the system =
L = 2ml²ω
L = 2 × 0.500 × (0.30)² × 2
L = 2 × 0.500 × 0.09 × 2
L = 0.18kgm²/s
Thus, the angular momentum of the system is 0.18kgm²/s
Answer:
Explanation:
<em>Work </em>is the change in kinetic energy and may be calculated as the product of the force in the direction of the displacement times the displacement.
For a differential displacement, Δx, and a variable force, f(x), the differential work done is:
And the total work done from a point xi to xf is:
Thus, for this problem we have:
- f(x) =
The symbol is just indicating that the direction of the force is in the same direction of the displacement.
Integrating you get:
And that is 54.8697 joules (since the units for x are meter and the units for f(x) are newtons).
Rounded to two significant digits: 55 joules.
Answer:
If the mass of both of the objects is doubled, then the force of gravity between them is quadrupled; and so on. Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces.
BRAINLIEST? plz
Answer:
532.0725 m
102.17270893 m/s
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
g = Acceleration due to gravity = 9.81 m/s² = g
H = Height of cliff
Distance traveled in 3 seconds
Distance traveled by sound = 2H-44.145 m
The height of the cliff is 532.0725 m
Her speed just before she hits the ground is 102.17270893 m/s