Circular & ULG Motion

Front

What is the direction of the acceleration vector in circular motion?

Back

The acceleration vector in circular motion points inwards, towards the center of the circle.

Front

How do you calculate the gravitational force between two objects?

Back

The gravitational force can be calculated using Newton's law of universal gravitation: F = G * (m1 * m2) / r^2, where G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between their centers.

Front

What does it mean for an object to be accelerating?

Back

An object is accelerating if it is changing its velocity, which includes changes in speed, direction, or both.

Front

What is centripetal acceleration?

Back

Centripetal acceleration is the acceleration directed towards the center of a circular path, necessary for an object to maintain circular motion.

Front

What is the formula for centripetal acceleration?

Back

Centripetal acceleration (a_c) can be calculated using the formula: a_c = v^2 / r, where v is the linear speed and r is the radius of the circular path.

Front

What is the relationship between the gravitational forces exerted by two objects on each other?

Back

According to Newton's third law, the gravitational force that one object exerts on another is equal in magnitude and opposite in direction to the gravitational force that the second object exerts on the first.

Front

What is the gravitational constant (G)?

Back

The gravitational constant (G) is a fundamental physical constant used in the calculation of gravitational forces, approximately equal to 6.674 × 10^-11 N(m/kg)^2.

Front

What is the significance of the radius in circular motion?

Back

The radius of the circular path affects both the centripetal acceleration and the gravitational force between objects in circular motion.

Front

How does speed affect centripetal acceleration?

Back

Centripetal acceleration increases with the square of the speed; as speed increases, the required centripetal acceleration also increases.

Front

What is the difference between linear speed and angular speed?

Back

Linear speed refers to the distance traveled per unit of time, while angular speed refers to the angle through which an object moves per unit of time.