"Two Force Balance" PPT courseware on motion and force

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"Two Force Balance" PPT courseware on motion and force

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Newton's first law

All objects always remain at rest or move in a straight line at a uniform speed when no force is acted upon.

2. Introduction of phenomena

1. Keep the textbook still on the table.

2. A skydiver falling at a constant speed.

3. Hanging electric lights.

4. A car that moves in a straight line at a constant speed.

The above objects remain at rest or move in a straight line at a uniform speed. Are they acted upon by any force?

Be affected by force. However, the effects of these forces acting on the object balance each other, which is equivalent to the object not receiving any force.

(1) Balance of forces

When an object is acted upon by several forces, if it remains at rest or moves in a straight line at a uniform speed, we say that these forces are balanced.

The state the object is in at this time is called equilibrium state.

If an object is acted upon by only two forces and is in equilibrium, this situation is called two-force equilibrium.

Experimental Investigation—Conditions for Balance of Two Forces

Equipment: Smooth horizontal tabletop, trolley, weight plate, weights, thin wire.

step:

1. Observe the situation when the weights on both sides are not equal.

2. Observe the situation when the weights on both sides are equal but the car moves.

3. Observe the situation when the weights on both sides are equal and the car is stationary.

4. Observe the twisting situation of the trolley when the weights on both sides are equal.

(3) Application of two force balance conditions

1. Please draw a schematic diagram of the force on the object in Figure 9-3-2, and analyze whether the object is subject to a balancing force and which pair of forces is a two-force balance.

1) Stationary hanging electric lamp.

2) The teacup resting on the table.

3) A trailer moving at a constant speed.

1. Balance state and balance force

Equilibrium state Resting state The force is the equilibrium force

Uniform linear motion state

2. Second force balance conditions

Congruent, collinear, opposite, equal magnitude. The resultant force of two forces that balance each other is zero.

3. Application of two force balance conditions

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For more information about the PPT courseware "Motion and Forces and Balance of Two Forces", please click on the "Movement and Forces ppt Two Forces Balance ppt" tab.

"Conditions for Balance of Two Forces" PPT courseware:

"Conditions for Balance of Two Forces" PPT courseware Part 1: Observation How many forces act on the chandelier? How is your exercise status? The chandelier is acted upon by two forces. The chandelier is stationary. How many forces are exerted on the cargo? How is your exercise status? The cargo is subject to two forces...

"Conditions for Balance of Two Forces" PPT:

"Conditions for Balance of Two Forces" PPT Part One Content: Scenario Exploration We know that force is the cause of changing the motion state of an object. All objects around us are subject to forces without exception, but why do many objects still maintain their motion state unchanged?

"Two Force Balance" Force and Motion PPT Courseware 2:

"Two Force Balance" Force and Motion PPT Courseware 2 Observation: When a car is at rest, is it affected by external forces? Observation: The plane can maintain uniform linear motion in the air. Does it receive any force? 1. Equilibrium state: An object is acted upon by two (or more) forces..

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Update Time: 2024-09-04

This template belongs to Physics courseware People's Education Edition Physics for Grade 8, Volume 2 industry PPT template

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