U9 - Incline Forces: Trig, FBD Analysis, Prep Problems

Front

What is the formula to convert weight (N) to mass (kg)?

Back

Mass (kg) = Weight (N) / g, where g = 9.81 m/s².

Front

What is the normal force in physics?

Back

The normal force is the force exerted by a surface to support the weight of an object resting on it, acting perpendicular to the surface.

Front

How do you calculate the downhill weight of an object on an incline?

Back

Downhill weight = Weight (N) * sin(θ), where θ is the angle of the incline.

Front

What is the relationship between weight and mass?

Back

Weight is the force exerted by gravity on an object, calculated as Weight (N) = Mass (kg) * g (9.81 m/s²).

Front

If a bicyclist weighs 800 N, what is their mass?

Back

Mass = 800 N / 9.81 m/s² ≈ 81.6 kg.

Front

What does FBD stand for in physics?

Back

FBD stands for Free Body Diagram, a graphical representation used to visualize the forces acting on an object.

Front

What is the significance of the normal force in an FBD?

Back

The normal force counteracts the weight of the object and is crucial for determining the net force acting on the object.

Front

How do you determine the normal force on an incline?

Back

Normal force = Weight (N) * cos(θ), where θ is the angle of the incline.

Front

What is the weight of an object that has a mass of 81.6 kg?

Back

Weight = Mass (kg) * g (9.81 m/s²) = 81.6 kg * 9.81 m/s² ≈ 800 N.

Front

What is the formula for calculating the gravitational force acting on an object?

Back

Gravitational force (Weight) = Mass (kg) * g (9.81 m/s²).