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2 years ago

Why is gravitational force always towards the center?

Physics

2 answers:

lesya692 [45]2 years ago

6 0

Answer:

i beleave cuz of the Earth is spherical

Explanation:

Ira Lisetskai [31]2 years ago

4 0

Because of the definition of gravity, point-mass, and centre of mass, the centre of mass will always be the point at which gravitational forces of the surrounding mass on any opposite sides are exactly equal

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A uniform disk with a mass of 5.0 kg and diameter 30 cm rotates on a frictionless fixed axis through its center and perpendicula

igomit [66]

Answer:

Angular acceleration of the disk will be $\alpha =10.714rad/sec^2$

Explanation:

We have given mass of the disk m = 5 kg

Diameter of the disk d = 30 cm = 0.3 m

So radius $r=\frac{d}{2}=\frac{0.3}{2}=0.15m$

Moment of inertia of disk is given by $I=\frac{1}{2}mr^2=\frac{1}{2}\times 5\times 0.15^2=0.056kgm^2$

Force is given by F=4 N

Torque is given as $\tau =Fr=4\times 0.15=0.6N-m$

We also know that torque is given by $\tau =I\alpha$

$0.6=0.056\times \alpha$

$\alpha =10.714rad/sec^2$

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2 years ago

Mercury's surface has many craters because _____.

Alexeev081 [22]

I think it would be that it has no atmosphere

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3 years ago

The particles of a substance stay close together but slide past one another as they move when thermal energy is added to the sub

Katen [24]

Answer: A liquid to gas

Explanation: I just got it wrong :(

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2 years ago

El Niño occurs every 2 to 12 years. true false

Novosadov [1.4K]

True
It is True I took the test

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2 years ago

Read 2 more answers

A skateboarder is accelerating forward. How would his acceleration change if he had more mass?

exis [7]

Answer:

If the force remains the same, the acceleration would decrease

Explanation:

According to Newton's second law, the acceleration of an object is given by

$a=\frac{F}{m}$

where

F is the force applied to the object

m is the mass of the object

As we see from the formula, the acceleration a is inversely proportional to the mass, m. Therefore, if the force F remains constant, this means that if the mass of the skateboarder increases, then the acceleration will decrease.

4 0

3 years ago