QUESTION 8 8.1 A crate of mass 2 kg is being pulled to the right across a rough horizontal surface by constant force F. The force F is applied at an angle of 20° to the horizontal, as shown in the diagram. 2 kg 20 8.1.1 . Draw a labelled free-body diagram showing ALL the forces acting on the crate. A constant frictional force of 3 N acts between the surface and the crate. The coefficient of kinetic friction between the crate and the surface is 0,2. Calculate the magnitude of the: 8.1.2 8.1.3 Normai force acting on the crate Force F 8.1.4 Acceleration of the crate A massive rock from outer space is moving towards the Earth. State Newton's Law of Universal Gravitation in words. 8.2 8.2.1 How does the magnitude of the gravitational force exerted by the Earth OR the rock change as the distance between the rock and the Earth become smaller? Choose from INCREASES, DECREASES or REMAINS TH SAME. Give a reason for the answer. 8.2.2 Terms, definitions, questions & answers

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Chapter1: Units, Trigonometry. And Vectors
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QUESTION 8
8.1
A crate of mass 2 kg is being pulled to the right
across a rough horizontal surface by constant
force F. The force F is applied at an angle of
20° to the horizontal, as shown in the diagram.
2 kg
20
8.1.1
Draw a labelled free-body diagram showing ALL the forces acting on the
crate.
A constant frictional force of 3 N acts between the surface and the crate. The
coefficient of kinetic friction between the crate and the surface is 0,2.
Calculate the magnitude of the:
8.1.2
8.1.3
Nomai force acting on the crate
Force F
8.1.4
Acceleration of the crate
A massive rock from outer space is moving towards the Earth.
State Newton's Law of Universal Gravitation in words.
8.2
8.2.1
How does the magnitude of the gravitational force exerted by the Earth on
the rock change as the distance between the rock and the Earth becomes
smaller? Choose from INCREASES, DECREASES or REMAINS THE
SAME. Give a reason for the answer.
8.2.2
Terms, definitions, questions & answers
Transcribed Image Text:(18] QUESTION 8 8.1 A crate of mass 2 kg is being pulled to the right across a rough horizontal surface by constant force F. The force F is applied at an angle of 20° to the horizontal, as shown in the diagram. 2 kg 20 8.1.1 Draw a labelled free-body diagram showing ALL the forces acting on the crate. A constant frictional force of 3 N acts between the surface and the crate. The coefficient of kinetic friction between the crate and the surface is 0,2. Calculate the magnitude of the: 8.1.2 8.1.3 Nomai force acting on the crate Force F 8.1.4 Acceleration of the crate A massive rock from outer space is moving towards the Earth. State Newton's Law of Universal Gravitation in words. 8.2 8.2.1 How does the magnitude of the gravitational force exerted by the Earth on the rock change as the distance between the rock and the Earth becomes smaller? Choose from INCREASES, DECREASES or REMAINS THE SAME. Give a reason for the answer. 8.2.2 Terms, definitions, questions & answers
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