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Solve exercise C1 page 27 Physics 6 textbook
Exercise:
Does the spring exert force on the heavy object? What is the direction and magnitude of that force? Why does the heavy object remain stationary?
Solution:
The spring exerts force on the heavy object.
That force has a vertical direction, opposite to the direction towards the Earth.
The heavy object remains stationary because it experiences the action of two balancing forces.
Solve exercise C2 page 27 Physics 6 textbook
Exercise:
What indicates that there is a force acting on the powder? What is the direction and magnitude of that force?
Solution:
- Holding a piece of chalk high and then suddenly letting go, the chalk falls straight down to the ground. This demonstrates that there is a force acting on the chalk.
- That force has a vertical direction and always points towards the Earth.
Solve exercise C3 page 28 Physics 6 textbook
Exercise:
Find the appropriate words from the box to fill in the blanks in the following sentences:
- The stretched spring exerted an upward pulling force on the heavy object. Yet the heavy object remained stationary. So there must be another force acting on the heavy object downward to (1) ........... with the force of the spring. This force is caused by (2) ............ acting on the heavy object.
- When the chalk is released, it begins to fall downward. Its motion has been (3) .......... So there must be a (4) ........... the chalk downward. This force is caused by (5) ........... acting on the chalk.
Solution:
(1) equilibrium
(2) Earth
(3) alteration
Use the appropriate words from the box to fill in the blanks in the following sentences:
a) When the heavy object hangs on the string and remains stationary, the gravitational force acting on the heavy object has (4) ........... with the tension force of the string. Therefore, the direction of gravity is also the direction of (5) ........., namely (6) .............
b) Based on the two experiments in figures 8.1 and 8.2, we can conclude that the direction of gravity is (7) ...........
Exercise:
Choose the appropriate words from the box to fill in the blanks in the following sentences:
a) When the heavy object hangs on the string and remains stationary, the gravitational force acting on the heavy object has (1) ........... with the tension force of the string. Therefore, the direction of gravity is also the direction of (2) ........., namely (3) .............
b) Based on the two experiments in figures 8.1 and 8.2, we can conclude that the direction of gravity is (4) ...........
Solution:
(1) equilibrium
(2) pulley
(3) upright
(4) from top to bottom.
Solution for Exercise C5 Page 29 Physics 6 Textbook
Exercise:
Find the appropriate word to fill in the blank in the sentence:
Gravity has a (1) ................ direction and a (2) ......................... direction.
Solution:
(1) vertical
(2) downward
Solution for Exercise C6 Page 29 Physics 6 Textbook
Exercise:
Hang a plumb line above the still surface of a water basin. The surface of the water is horizontal.
Use a plumb line to find the relationship between the vertical direction and the horizontal surface.
Solution:
The vertical and horizontal directions form a right angle with each other.
In Chapter I Mechanics, you will learn about Force Measurement. Weight and Mass. Refer to the hints for solving exercises on pages 34, 35 Physics 6 to study Physics 12 effectively.
Elastic force is the next part of Chapter I Mechanics Physics 6 Grade 11. Refer to the hints for solving exercises on pages 31, 32 Physics 6 to grasp the knowledge and study Physics 6 effectively.
