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4 years ago

The state of an object accelerating due to the force of gravity alone

Physics

2 answers:

wlad13 [49]4 years ago

7 0

Newton's second law of motion?

Nookie1986 [14]4 years ago

4 0

If gravity is the ONLY force acting on an object, that's when we say the object is in "<em>free fall</em>".

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How do you calculate the magnitude of a force?

Tamiku [17]

If the force equals, for instance, 100 Newtons then 0.866 × 100 = 86.6 Newtons. This is the magnitude of the resultant force vector on the object.

3 0

3 years ago

In the film, 2001: A Space Odyssey, astronauts travel through space and experience artificial gravity created by a spinning, cyl

katrin2010 [14]

Artificial gravity is created by rotating the cylinder

So here we can say that the acceleration is due to centripetal acceleration

So here we know that the formula of centripetal acceleration is given by

$a_c = \frac{v^2}{R}$

so here we know that

$a_c = 9.8 m/s^2$

$v = 30.9 m/s$

now we will plug in all values

$9.8 = \frac{30.9^2}{R}$

$R = \frac{30.9^2}{9.8}$

$R = 97.43 m$

So above is the radius of the cylinder

Now to find the diameter

$d = 2R$

$d = 2*97.43$

$d = 194.8 m$

so its diameter is 194.8 m

4 0

3 years ago

a circular cylinder and isused to maintain a water depth of 4 m. That is, when the water depth exceeds 4 m, thegate opens slight

stiv31 [10]

Answer:

W / A = 39200 kg / m²

Explanation:

For this problem let's use the equilibrium equation of / newton

F = W

Where F is the force of the door and W the weight of water

W = mg

We use the concept of density

ρ = m / V

m = ρ V

The volume of the water column is

V = A h

We replace

W = ρ A h g

On the other side the cylinder cover has a pressure

P = F / A

F = P A

We match the two equations

P A = ρ A h g

P = ρ g h

P = 39200 Pa

The weight of the water column is

W = 1000 9.8 4 A

W / A = 39200 kg / m²

3 0

4 years ago

Why are identical bulbs arranged in a series circuit with a battery less bright than those arranged in a parallel circuit with t

tatuchka [14]

Explanation:

Resistors connected in series obey the following equation:

$R_{\rm eq} = R_1 + R_2 + R_3 + ...$

Resistors connected in parallel obey the following equation:

$\frac{1}{R_{\rm eq}} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3} + ...$

The total current of the circuit will obey the Ohm's Law: V = IR. And the current will be divided across the resistors (bulbs) depending on their resistances. So, if a bulb has a higher resistance, then its current will be lesser, and it will be less bright. If a bulb has a lower resistance, then its current will be higher, and it will be brighter.

According to the above resistances connected in series and parallel, clearly, the resistances (bulbs) connected in series will have more resistance in total, and therefore less current will flow across them, and they will be less bright.

6 0

3 years ago

In principle, the motion of a simple pendulum and an object on an ideal spring can both be used to provide the basic time interv

stich3 [128]

Answer:

Explanation:

The time period of the pendulum containing simple pendulum is given by

$T = 2\pi \sqrt{\frac{L}{g}}$

where, L is the length of the pendulum and g is the value of acceleration due to gravity.

The time period of the clock using the spring mechanism is given by

$T = 2\pi \sqrt{\frac{m}{k}}$

where, m is the mass of the block attached to the spring and k is the spring constant.

here we observe the time period of the pendulum depends on the value of acceleration due to gravity. The value of acceleration due to gravity decreases as we go on the heights that means when the clock is taken to the mountain, the value of g decreases and thus, the value of time period increases and the clock runs slow.

So, the clock containing the spring system gives the accurate reading rather than the clock containing simple pendulum.

5 0

3 years ago

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