Forces on an Incline and Law of UG

What is the value of gravitation constant...

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NGSS.HS-PS2-4

How are mass and weight different?

• Mass is the amount of matter in an object;Weight is the amount of gravitational force acting on the object
• Mass is the amount of gravitational force acting on an object;Weight is the amount of matter in an object
• Mass is a thing;Weight is a place
• Mass is an animal;weight is a human

Which configuration will result in the greatest gravitational force?

• small masses far apart

• large masses far apart

• small masses close together

• large masses close together

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NGSS.HS-PS2-4

If I double the distance between two objects, what happens to their gravitational Force?

• 4x bigger
• 4x smaller
• 2x bigger
• 2x smaller

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NGSS.HS-PS2-4

Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg.

• 2.96x10^-7N

• 3.00x10^-6N

• 2.22x10^-9N

• 2.23x10^-8N

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NGSS.HS-PS2-4

If two objects are moved to a distance 3 x further than they were before. How would the gravity force between them change?

• It would be 3x larger.

• It would be 1/3 as large

• It would be 1/9 as large

• It would be 9x larger

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NGSS.HS-PS2-4

If an object is at rest on an inclined plane, which of the following forces is greatest?

• Normal Force
• Friction
• Weight
• Both Normal Force and Weight are equal, so they both are the greatest.

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NGSS.HS-PS2-1

A box weighing 46 newtons rests on an incline that makes an angle of 25° with the horizontal. What is the magnitude of the component of the box’s weight perpendicular to the incline?

• 19N
• 21N
• 42N
• 26N

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NGSS.HS-PS2-1

Which of the following is the best expression for the Normal Force?

• F_N = mg cos(ϴ)

• F_N = mg sin(ϴ)

• F_N = mg sin(180-ϴ)

• F_N = mg cos(90-ϴ)

If there is no friction, what is the acceleration of the box?

• 10.43 m/s²

• 0.86 m/s²

• 9.81 m/s²

• 3.36 m/s²

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NGSS.HS-PS2-1