Centripetal Force

Front

What is the difference between static friction and kinetic friction?

Back

Static friction acts on objects at rest, while kinetic friction acts on objects in motion.

Front

How do you calculate the coefficient of kinetic friction?

Back

The coefficient of kinetic friction (μk) can be calculated using the formula: μk = Ff / N, where Ff is the frictional force and N is the normal force.

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

How does the gravitational force change when one mass is tripled and the other is quadrupled?

Back

The gravitational force becomes 12 times bigger when one mass is tripled and the other is quadrupled, assuming the distance remains constant.

Front

What is the formula for gravitational force?

Back

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

Front

What is the net force when two forces act in opposite directions?

Back

The net force is the difference between the two forces, and it is directed towards the larger force.

Front

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

Back

In circular motion, the acceleration is always directed towards the center of the circle, indicating a change in direction of the velocity.

Front

What is the relationship between mass and weight?

Back

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

Front

What is the role of friction in motion?

Back

Friction opposes the relative motion between two surfaces in contact, affecting the acceleration and velocity of moving objects.

Front

How do you determine if forces are balanced?

Back

Forces are balanced if the net force acting on an object is zero, meaning the object is either at rest or moving with constant velocity.