Universal Gravitation & Uniform Circular Motion

Front

What is Universal Gravitation?

Back

Universal Gravitation is a fundamental principle stating that every mass attracts every other mass in the universe, with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Tags

NGSS.HS-PS2-4

Front

What is the formula for centripetal acceleration?

Back

The formula for centripetal acceleration (a_c) is a_c = v²/r, where v is the linear speed and r is the radius of the circular path.

Front

How does centripetal acceleration change if speed is doubled?

Back

If the speed is doubled, the centripetal acceleration increases by a factor of 4, since a_c = v²/r.

Front

What happens to gravitational force if both masses are doubled?

Back

If both masses are doubled, the gravitational force increases by a factor of 4, according to the formula F = G(m₁m₂)/r².

Tags

NGSS.HS-PS2-4

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object, calculated as W = mg, where m is mass and g is the acceleration due to gravity.

Tags

NGSS.MS-PS2-4

Front

What is centripetal force?

Back

Centripetal force is the net force that acts on an object moving in a circular path, directed towards the center of the circle.

Front

What is the effect of radius on centripetal acceleration?

Back

Centripetal acceleration is inversely proportional to the radius; as the radius increases, the centripetal acceleration decreases for a constant speed.

Front

What happens to your mass if Earth's mass is halved?

Back

Your mass remains unchanged because mass is a measure of the amount of matter in an object and is not affected by gravitational force.

Front

What is the formula for calculating centripetal force?

Back

Centripetal force (F_c) can be calculated using the formula F_c = mv²/r, where m is mass, v is speed, and r is the radius.

Front

What is the significance of tension in circular motion?

Back

Tension in a string or rope provides the necessary centripetal force to keep an object moving in a circular path.

Tags

NGSS.HS-PS2-1