Judge whether "the pressure on the plane of an object placed on a horizontal plane must be equal to the magnitude of gravity." Please see the title requirements clearly!!! Explain the reason!! ~ ~

Judge whether "the pressure on the plane of an object placed on a horizontal plane must be equal to the magnitude of gravity." Please see the title requirements clearly!!! Explain the reason!! ~ ~

In the case of only gravity and supporting force, the two are of course equal. The attraction of the earth to the object (i.e. gravity) and the pressure of the object on the earth (horizontal plane) are mutual forces, equal; if there are other forces, then look at the direction of the other forces. Horizontal, the two are equal, not horizontal

When a body is stationary on a horizontal plane, is gravity equal to the pressure of the body on the horizontal plane? Why

When a body is still on a horizontal plane and is not stressed in the vertical direction, the gravity is equal to the pressure on the horizontal plane
If the force is upward in the vertical direction, the gravity is greater than the pressure
If a downward force is applied vertically, the pressure is greater than gravity
If the force is inclined upward or downward, there is a component force in the vertical direction, and the gravity is not equal to the pressure

The reason why the pressure of a body on a horizontal plane equals gravity

Not equivalent, only equivalent

What number should be filled in brackets? 4( )12（ ）25( ）（ ）（ ）（ ）

4( 9 )12（ 18 ）25( 36 ）（ 52 ）（ 77 ）（ 116 ）
The rule is that the sum of two consecutive numbers minus (1,3,5,7,9,11,13.) is the next number

Fill in the appropriate number in brackets 7.28÷（ ）＞7.28 7.28÷（ ）=7.28 7.28÷（ ）＜7.28

7.28÷（ 0.5 ）＞7.28
7.28÷（1）=7.28
7.28÷（2 ）＜7.28

What numbers can be filled in brackets? 7 () × 6 () ~ 4300 () 9 × 1 () about 500 4 () × () 5 about 620 74 × () () about 5000

7 (1) × 6 (1) about 4300
(2) 9 × 1 (7) about 500
4 (1) × (1) 5 about 620
74 × (6) (8) about 5000

Please fill in the number 281420 ()

Twenty-six

Fill in the numbers in brackets During the reign of emperor Bai, Li Jiangling was returned on the day Jasper make up () tree height, () hanging green silk

During the White Emperor's speech, the emperor's mausoleum was returned a thousand li a day
Jasper make up (a) tree height, (10000) hanging green silk

One day () autumn (number in brackets)

days creep by like years

Mathematical Olympian: fill in the blanks according to the rules. How many brackets should be filled in? Why? 2 6 7 11 4 4 （） 1 3 5 5 6

（2+4）÷2=3
（6+4）÷2=5
（7+?）÷2=5 =5×2-7=3
（11+1）÷2=6