Acceleration due to gravity at the surface of Mars is given by the formula
![g_m = \frac{GM}{R^2}](https://tex.z-dn.net/?f=g_m%20%3D%20%5Cfrac%7BGM%7D%7BR%5E2%7D)
here
M = mass of Mars
R = radius of Mars
Now if we take a point which is at height 3 times the radius of Mars from its surface
So the acceleration due to gravity is given as
![g = \frac{GM}{(3R+R)^2}](https://tex.z-dn.net/?f=g%20%3D%20%5Cfrac%7BGM%7D%7B%283R%2BR%29%5E2%7D)
now using this
![g = \frac{GM}{16R^2}](https://tex.z-dn.net/?f=g%20%3D%20%5Cfrac%7BGM%7D%7B16R%5E2%7D)
![g = \frac{g_m}{16}](https://tex.z-dn.net/?f=g%20%3D%20%5Cfrac%7Bg_m%7D%7B16%7D)
so here the gravity is 16 times lesser than gravity at surface
Answer:
That right there is what caused the world to end my friend
Explanation:
Answer:
Option 2
Explanation:
Weight of the box is being acted downwards due to gravity
However, based on Newton's third law (for every action (force) in nature there is an equal and opposite reaction), an equal force will act on the box by the table
Answer:
Explanation:
Moment of inertia of wheel = 1/2 x mR² , m is mass and R is radius of wheel
= .5 x 9 x .4²
= .72 kg m²
Torque created on wheel by string = T x r , T is tension and r is radius of wheel .
13 x .4 = 5.2 N m
angular acceleration α = torque / moment of inertia
= 5.2 / .72
= 7.222 rad /s²
a ) final angular speed = α x t , α is angular acceleration , t is time.
= 7.222 x .72
= 5.2 rad /s
b )
θ = 1/2 α t² , θ is angle turned , t is time
= .5 x 7.222 x .72²
= 1.872 rad
average angular speed = θ / t
= 1.872 / .72
= 2.6 rad /s
c )
angle turned = 1.872 rad ( discussed above )
d )
length of string coming off
= angle rotated x radius of wheel
= 1.872 x .4
= .7488 m .
74.88 cm