Gravitational Force

Mr. Anderson explains gravitational force, differentiating between mass and weight. He uses examples like an orange to illustrate how mass remains constant while weight varies with gravitational field strength. The video covers calculating gravitational force using the formula m times g, and discusses freefall and gravitational fields. It concludes with practical examples of weight calculation.

What device would you use to measure the weight of an object on Earth?

• A barometer

• A thermometer

• A scale

• A balance

How do you calculate the gravitational force acting on an object?

• By dividing mass by gravitational field strength

• By adding mass and gravitational field strength

• By multiplying mass by gravitational field strength

• By subtracting gravitational field strength from mass

What is the gravitational field strength on Earth?

• 9.8 meters per second squared

• 9.8 newtons per kilogram

• 9.8 kilograms per newton

• 9.8 seconds per meter

If an orange has a mass of 0.20 kilograms, what is the gravitational force acting on it on Earth?

• 4.0 newtons

• 1.0 newton

• 2.0 newtons

• 3.0 newtons

What happens to an object in freefall in a gravitational field?

• It moves upwards

• It remains stationary

• It accelerates towards the center of the field

• It decelerates

What is the relationship between gravitational field strength and acceleration due to gravity?

• They are the same in both magnitude and units

• They are inversely proportional

• They are unrelated

• They are equal in magnitude but have different units

How is the normal force related to gravitational force on an object at rest on Earth's surface?

• It is greater than the gravitational force

• It is less than the gravitational force

• It is equal and opposite to the gravitational force

• It does not affect the gravitational force