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# A person pushes a 14.0kg lawn mower Some people press a 20 kg mare at a constant speed, indicating the force 35 and 0o at a constant speed at a constant speed (see drawing). The horizontal force of braking, which works in mowers, and then (C) (C) vertical work, which works vertically on the ground of the mowing.

Answer 26p: In this state, it is necessary to calculate the force that acts on the mower, and the strength that acts on the mower. Step 1 of 5 Concept: 1) Newton’s third law: all actions have the opposite reaction. 2) Newton’s second law: power F, which acts on mass M, generates acceleration a in the object. Mathematically, f = ma. 3) The friction force also acts on the surface of the object in contact, when there is a relative movement between two objects. 4) the scheme of the free body is a schematic representation of all power, which acts on the object in a certain situation in the amount and figure.

47. (II) The box pushes and slides on the floor. If the dynamic friction coefficient is 0, 20, and the initial speed when pressed is 4, 0 m/s, how much distance do you move? & LT; Pran & GT; A person presses 14, 0 kg at a certain speed. Power F = 88, 0 N is directed along the handle with the horizon angle 45 and 0 °.

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Some people press a 20 kg mare at a constant speed, indicating the force 35 and 0o at a constant speed at a constant speed (see drawing). The horizontal force of braking, which works in mowers, and then (C) (C) vertical work, which works vertically on the ground of the mowing.

Answer 26p: In this state, it is necessary to calculate the force that acts on the mower, and the strength that acts on the mower. Step 1 of 5 Concept: 1) Newton’s third law: all actions have the opposite reaction. 2) Newton’s second law: power F, which acts on mass M, generates acceleration a in the object. Mathematically, f = ma. 3) The friction force also acts on the surface of the object in contact, when there is a relative movement between two objects. 4) the scheme of the free body is a schematic representation of all power, which acts on the object in a certain situation in the amount and figure.

## Related Physics Q&A

47. (II) The box pushes and slides on the floor. If the dynamic friction coefficient is 0, 20, and the initial speed when pressed is 4, 0 m/s, how much distance do you move? A person presses the legislative power of 14, 0 kg with a certain speed. Power F = 88, 0 N is directed along the handle with the horizon angle 45 and 0 °.

Some people press a 20 kg mare at a constant speed, indicating the force 35 and 0o at a constant speed at a constant speed (see drawing). The horizontal force of braking, which works in mowers, and then (C) (C) vertical work, which works vertically on the ground of the mowing.

### Sample 3. 1 Lawnmower

Answer 26p: In this state, it is necessary to calculate the force that acts on the mower, and the strength that acts on the mower. Step 1 of 5 Concept: 1) Newton’s third law: all actions have the opposite reaction. 2) Newton’s second law: power F, which acts on mass M, generates acceleration a in the object. Mathematically, f = ma. 3) The friction force also acts on the surface of the object in contact, when there is a relative movement between two objects. 4) the scheme of the free body is a schematic representation of all power, which acts on the object in a certain situation in the amount and figure.

47. (II) The box pushes and slides on the floor. If the dynamic friction coefficient is 0, 20, and the initial speed when pressed is 4, 0 m/s, how much distance do you move?

Above, Jankori-san answered with Daichiko. This is a free figure that shows the four forces that work on lawn mowers. People can add at an angle of 45 degrees from horizontal. There is a force of friction that goes straight back, gravity down and springs from the ground up. The power that this person uses has two elements, but only one power. By the way, in part B we will look at thex-components. This triangular cathedral adjoins 45 degrees. So we use COS, put COS45 on 8 8-88 Newton and find 62 and 2 Newtons as the X component of power. And this is equal to the force of friction. This is because there is no horizontal acceleration, so the total power on the right must be equal to the total left force. Thus, the force of friction is 62 and 2 Newtons. Since the vertical acceleration, it turns out that the individual force applied to the surface in the subject. Thus, the upward Norman force must be equal to the sum of the downward force, gravity, and additional Y components. Gravity mg. And it’s a 45 sine line on power. This is because the Y component is the opposite cathedral of this triangle. And it will be Newton per 1 kg 14 kg, 8 newton per kg and from 45 to 88 Newton to 199 Newton, which should be the source up. And how much energy is needed to accelerate power? Well, the initial speed is 0. I guess I should lose this word, but anyway. It’s also 0°C and it’s also 0°C. Acceleration is the final speed to time. In other words, if you divide 1. 5m per second by 2. 5 seconds, it will be 0. 6m at the second speed of seconds. And if you know this acceleration, you can calculate how much force you need to apply. The component X that has the friction force on the left side of the force applied on the right side must be equal to the mass accelerating in the direction of the X direction. And this is Newton’s second rule of motion. And this is pure level. And if you move that section to the right and add a friction force on both sides, you can solve FP, so there it is. It is then paraphrased that FPX is hung with CoSθ on FP or COS45 on FP.

Assembling part B In other words, the friction force is added to 14 kg 0. 6 m/s, which is 0. 6 m/s. 62. 2 Dividing Newton’s friction by COS 45 results in 99. 8 Newton.

45. (ii) The dynamic coefficient of friction of a 22 kg bobsled in orbit is 0. 10. What is the need to pull out an inclination of 6 and 0 and reach a speed of 60 cm at the end of a 7 5 m orbital?

Q: Two power, F1 = 60N, which applies a positivex-direction at the starting point, acts on an object with a weighing of 5 kg.

Fy =n-mg-p sin θ = m ay = 0

Question: If there is no air resistance, who is the first to fall to the ground? With a scarf

Centroting acceleration can be obtained by friction. In a flat curve, the normative force is equal to the weight, and the code F is MG. F = m a is used here.

(A) When the car speed is 15 m/s, how much pressure does the car receives on the surface of the road? (B) When the speed in the upper part of the ridge is 20 m/s, calculate the size and direction of the necessary power between the car and the road. Please explain the answer.

72. A bag weighing 2, 0 kg falls from the top of the Pisa tower, reaching land at a speed of 29 m/s from a height of 55 m. What was the average air resistance force?

This is due to the fact that the sign W G is MG, and the code D is MG D. 0 kg 9, 80 m C 2 22. 0 m Cos 90 � = 0 J

D6. A car with a weighing of 1000 kg of radius 1 1 1-hokvature crosses a hill with a weighing of 1000 kg in a vertical direction.

71. Start as if the car rolled for one quarter (a quarter, the difference in height is 1 m with every 4 m on the road).

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