Answer:
17×10⁶ N
Explanation:
1 atm on Earth is 101325 Pa.
So on Venus, the atmospheric pressure is:
91 × 101325 Pa = 9220575 Pa
The force on an average human being would be:
F = PA
F = 9220575 Pa × 1.8 m²
F = 16597035 N
Rounded to two significant figures, the force would be 17×10⁶ N, or 17 MN.
Answer:
a) The distance of the object from the center of the Earth is 8.92x10⁶ m.
b) The initial acceleration of the object is 5 m/s².
Explanation:
a) The distance can be found using the equation of gravitational force:
Where:
G: is the gravitational constant = 6.67x10⁻¹¹ Nm²/kg²
M: is the Earth's mass = 5.97x10²⁴ kg
m: is the object's mass = 0.4 kg
F: is the force or the weight = 2.0 N
r: is the distance =?
The distance is:
Hence, the distance of the object from the center of the Earth is 8.92x10⁶ m.
b) The initial acceleration of the object can be calculated knowing the weight:
Where:
W: is the weight = 2 N
a: is the initial acceleration =?
Therefore, the initial acceleration of the object is 5 m/s².
I hope it helps you!
Answer:
Explanation:
since force is applied downwards at some angle with the horizontal
so here we will have
now we know that the box will not move if applied force is balanced by frictional force on it
so we will have
so here we can say
To solve this problem we will apply the principle of energy conservation. Here we have that the gravitational potential energy must be equal to the kinetic energy of the body. So,
Here,
m = mass of projectile
G = Gravitational Universal constant
M = Mass of the planet
R = Total height from center of mass of the planet
v = Velocity
Rearraning to find the velocity we have,
Our values are given as,
Replacing we have,
Therefore the initial speed of the projectile must be 4531.12m/s