Answer: 0.09 J
Explanation: K = 200 N/m , 1/2 X 200 N/m X (0.03 M)^2 = 0.09 J
Answer:
r =
Explanation:
Let's apply the universal gravitation law to the body (c), we use the indications 1 for the planet and 2 for the moon
∑ F = 0
-F_{1c} + F_{2c} = 0
F_{1c} = F_{2c}
let's write the force equations
where d is the distance between the planet and the moon.
(d-r)² =
d² - 2rd + r² = \frac{m}{M} \ \ r^2
d² - 2rd + r² (1 - ) = 0
(1 - ) r² - 2d r + d² = 0
we solve the second degree equation
r = [2d ± ] / 2 (1- )
r = [2d ± 2d ] / 2d (1- )
r =
there are two points for which the gravitational force is zero
It is the ratio of distance an object moves to the amount of time needed to travel the distance.
Option b.