Answer:
735 J
Explanation:
From the question given above, the following data were obtained:
Weight (W) = 49 N
Height (h) = 15 m
Potential energy =?
Potential energy is simply defined as the product of weight of the object and height to which the object is raised. Mathematically, it is expressed as:
Potential energy = weight × height
With the above formula, we can obtain the potential energy of the coconut as follow:
Weight (W) = 49 N
Height (h) = 15 m
Potential energy =?
Potential energy = weight × height
Potential energy = 49 × 15
Potential energy = 735 J
Thus, the potential energy of the coconut is 735 J
Answer:
X = 50 g
Explanation:
Please see attached photo for explanation.
From the attached photo,
Anticlock–wise moment = X × 20
Clockwise moment = 100 × 10
Anticlock–wise moment = clockwise moment
X × 20 = 100 × 10
X × 20 = 1000
Divide both side by 20
X = 1000 / 20
X = 50 g
Therefore, the value of X is 50 g
Your brain controlls your body to move
Answer:
Explanation:
Let mass of the apple be m . Force on it at surface of the planet can be expressed as follows
F_R = G Mm / R²
Where M is mass of the planet.
Let at at height h the gravitational force on apple be 0.3 F_R
0.3 F_R = G Mm / ( R +h)²
Dividing the two equation
1 / 0.3 = ( R +h)²/ R²
( R +h)/ R = 1.825
h = .825 R
b )
If we go deep inside the planet to get force on apple equal to .3 F_R
.3 F_R = G 4/3 π ( R - h )³ d m / (R-h)² [ d is density of planet ]
.3 F_R = G 4/3 π ( R - h ) d m
F_R = G Mm / R²
F_R = G 4/3πR³d m / R²
F_R = G 4/3πR d m
dividing two equations
0.3 = ( R - h ) / R
h = .7 R
