Circular Motion and Gravitation Flashcardizz

Front

What is the direction of the velocity vector of an object moving in a circle with constant speed?

Back

The velocity vector always points tangential to the circle.

Front

How does weight change with distance from the center of a planet?

Back

Weight decreases with the square of the distance from the center of the planet.

Front

What is the formula for gravitational force between two masses?

Back

F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between their centers.

Front

What is torque and how is it calculated?

Back

Torque is a measure of the rotational force applied to an object, calculated as Torque = Force x Distance from pivot point x sin(θ), where θ is the angle between the force and the lever arm.

Front

How does doubling the mass of a planet affect the weight of an object on its surface?

Back

If the mass of the planet doubles, the weight of an object on its surface also doubles.

Front

What happens to your weight if you move to a distance of 2 radii from the center of a planet?

Back

Your weight becomes one-fourth of what it is on the surface of the planet.

Front

What is the relationship between centripetal force and circular motion?

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 applying force at the outer edge of a wheel?

Back

Applying force at the outer edge of a wheel generates maximum torque.

Front

How does gravitational force change with distance?

Back

Gravitational force decreases with the square of the distance between the centers of two masses.

Front

What is the significance of the gravitational constant (G)?

Back

The gravitational constant (G) is a proportionality factor used in the calculation of gravitational force between two masses.