Free Printable Concept Check 2.B.4-5

Worksheets

Concept Check 2.B.4-5

Total questions: 29

Worksheet time: 31mins

Name

Class

Date

If mass of one object is doubled then the force of gravity is

doubled

half

4 times as big

1/4 times as big

If mass of both objects are doubled then the force of gravity is

doubled

half

4 times as big

1/4 times as big

if the mass of one object is 1/2 then the force of gravity is

doubled

half

4 times as big

1/4 times as big

If the orginal force of gravity is 100 N and the distance is doubled then the force of gravity is

200

400

Why would you weigh less on the moon?

less air

less sunlight

there is no water on the moon

less gravitational pull

What would have the greatest gravitational pull on each other?

two small objects close together

a large and small object far apart

two large objects close together

all choices are correct

Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if the distance between them were doubled?

144

What happens to Gravitational force if I double both of the masses and double their distance?

stays the same

half as big

4x bigger

2x bigger

Which graph represents what happens to F_g between two objects if the distance between them increases?

10.

Gravitational force between two massive spheres

is always an attraction

depends on how massive they are

depends inversely on the square of the distances between them

all of the above

11.

A massive object and a less massive object exert a gravitational force on each other. Which of the following picture correctly shows the magnitude and direction of the forces involved in this interaction?

12.

The picture shows two identical satellites, A and B, in circular orbits around the Earth. Upon which satellite does the Earth exert a stronger gravitational force?

Satellite A

Satellite B

Equal on both

Cannot be determined

13.

Luke Skywalker has a mass of 13 kg and weight of 127.4 N on earth. Find his weight on the Endor moon. Acceleration due to gravity of 2 m/s/s.

254.8 N

13 kg

26 N

127.4 kg

14.

The force keeping a planet in orbit around the sun is...

Friction

Tension

Gravity

weight

15.

How does the force of gravity between two objects change when the distance between them is 5 times larger?

5 times more

5 times less

25 times more

25 times less

16.

Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if the distance between them were doubled?

144

17.

If the Earth's mass suddenly tripled but the radius remained the same, what would happen to your weight?

It would also triple

It would be reduced by 1/3

it would be reduced by 1/9

It would remain the same

18.

Which is greater?

The Earth's gravitational force acting on you.

Your Gravitational force acting on the Earth

Both forces are the same size.

19.

A moon of mass m orbits a planet of mass 100m. Let the strength of the gravitational force exerted by the planet on the moon be denoted by F₁, and let the strength of the gravitational force exerted by the moon the planet be F₂. Which of the following is true?

F₁ = 100F₂

F₁ = 10F₂

F₁ = F₂

F₂ = 10F₁

20.

The dwarf planet Pluto has 1/500 the mass and 1/15 the radius of Earth. What is the value of g (in m/s²) on the surface of Pluto?

$\frac{50}{225}$

$\frac{50}{15}$

$\frac{15}{50}$

$\frac{225}{50}$

21.

A moon of Jupiter has nearly circular orbit of radius R and an orbit period of T. Which of the following expressions give the mass of Jupiter? HINT: Start with the centripetal Newton's 2nd Law and derive m.

$\frac{4\pi^2R}{T^2}$

$\frac{2\pi R^3}{\left(GT^2\right)}$

$\frac{4\pi R^2}{\left(GT^2\right)}$

$\frac{4\pi^2R^3}{\left(GT^2\right)}$

22.

You are looking at a top view of a planet orbiting the Sun in a clockwise direction. Which of the following would describe the velocity, acceleration, and force acting on the planet due to the Sun's pull at point P?

23.

A satellite of mass m moves in a circular orbit of radius R around a planet of mass M with speed v. Which of these must be true for the satellite? Choose two answers.

The net force on it is MR/v²

Its acceleration is GM/R

Its orbital velocity is (GM/R)^1/2

Its orbital period is 2πR/v

24.

Match the following scenarios with the correct net force.

earth rotating around the sun

banked curve (use ramp angle)

Fnsinθ

satellite in orbit

top of a hill

Fg - Fn

conical pendulum (like flying pig)

Ftsinθ

25.

Match the following scenarios with the correct net force.

yoyo at bottom of vertical circle

Fn - Fg

Jupiter rotating around the sun

bottom of a valley

Fn - Fg

Astronaut orbiting the earth

conical pendulum (like flying pig)

Ftsinθ

26.

When calculating g (gravitational field strength) for a planet, which mass goes into the calculation, mass of planet (m_p) or mass of the object (m_o)?

both masses

only m_p

only m_o

neither; g is a constant

27.

The acceleration due to gravity (g) can be calculated for any location using which equation? Assume m₁is the mass of the planet.

Gm₁m₂

Gm₁m₂/r²

√(Gm₁/r)

Gm₁/r²

28.

Organize these concepts based on whether they apply to the following terms (2 concepts per term).

Categorize the following

only a constant when the distance between the objects stays the same

only depends on planet's mass

always constant

extremely small

depends on the mass of both objects

only constant when the distance AND two objects stay the same

a square root equation

describes the minimum speed required to maintain the orbital motion

Gravitational Force

orbital velocity

29.

Organize these concepts based on whether they apply to the following terms. (2 concepts per term)

Categorize the following

also called gravitational field strength

only depends on planet's mass and distance squared

always constant

Universal Gravitational Constant

depends on the mass of both objects

quadruples when both masses are doubled

depends on just distance not r squared

describes the minimum speed required to maintain the orbital motion

Gravitational Force

orbital velocity

Reset

Concept Check 2.B.4-5

Total questions: 29

Worksheet time: 31mins

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