"Measuring the Size of Force" Motion and Force PPT Download

Description

"Measuring the Size of Force" Motion and Force PPT Download

Part One: Beginner’s Exploration

A spring dynamometer is a tool for measuring force. It is called a spring balance in life.

Classification of spring dynamometers

flat spring

Dynamometer

handle spring

Dynamometer

Cylindrical spring

Dynamometer

bar box spring

Dynamometer

The functions of each part of the spring dynamometer

Spring: Shows the magnitude of the force

Hook: hang the object under test

Dial: indicates the scale

Pointer: indicates the size of the force

Hanging ring: easy to hold

Housing: fixed spring

How does a spring dynamometer work?

The principle of spring dynamometer:

Within the elastic range, the greater the tension on the spring, the longer the spring elongates. That is to say, it is made by taking advantage of the characteristics of "large force and long elongation".

Measuring force PPT, part 2: cooperative exploration

Measuring force with a spring dynamometer

Precautions:

1. Pick up the dynamometer and first check whether the pointer is pointing at the "0" position.

2. When reading, keep your sight level with the pointer.

3. The measured force cannot exceed the measuring range of the dynamometer.

think:

1. How many cows are there in each large grid?

Each large square is 1 cow

2. How many cows are in each small square?

Each small square is 0.2 N

3. How many cows can be measured at most?

Can measure up to 5 N

Measuring force PPT, part three: expansion and extension

Assess the magnitude of force in life

The force used to pick up two eggs is approximately 1N

The pulling force of an adult man's right hand is about 750N

The pulling force of a woman's right hand is about 400 N

The maximum grip strength of the right hand is about 560 N

The maximum grip strength of the left hand is approximately 430 N

Hands

Production steps:

1. Hang the spring, let it hang freely, and mark the 0 mark at the position where the pointer is;

2. Hang a weight on the hook of the homemade spring, calculate the gravity on the object, and mark the corresponding scale value at the position pointed by the pointer;

3. Divide the 0 scale line and the maximum measurement value into several equal parts according to needs and actual conditions, and mark each scale line and graduation value.

Measuring force PPT, part 4 content: Class summary

A spring dynamometer is a tool for measuring force. It consists of a lifting ring, a pointer, a scale plate, a hook, a spring and a shell. It is made based on the principle that the greater the tension on the spring, the longer the spring will elongate within the elastic range. The unit is Newton (N).

Measuring force PPT, Part 5: In-class training

1. Fill in the blanks

There are three points to note when using a spring dynamometer:

1. Pick up the spring dynamometer and first check whether the pointer is pointing at the ( ) position.

2. When reading, keep your sight at the pointer ( ).

3. The measured force cannot exceed the ( ) range marked on the spring dynamometer scale.

2. Choice

1.The unit of force is ( )

A.Newton B.Kilogram C.Kilogram

2. The spring dynamometer is a tool for measuring ( )

A. Weight B. Volume C. Size of force

Measuring force PPT, Part 6: Homework

Perfectly made rubber band dynamometer

Keywords: Free download of Chinese PPT courseware for the fifth grade in the textbook version, PPT download of measuring the size of force, PPT download of motion and force, .PPT format;

For more information about the "Motion and Force Measuring the Size of Force" PPT courseware, please click the "Motion and Force ppt Measuring the Size of Force ppt" tag.

"Measuring the Size of Force" Motion and Force PPT:

"Measuring the Size of Force" Motion and Force PPT

Part 1: Understanding the spring dynamometer

In-depth study of motion and force often requires knowing the size of force. A spring dynamometer is a tool for measuring force. It is often called a spring balance in life.

Use force..

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Update Time: 2024-11-11

This template belongs to science courseware Fifth Grade Science Volume 1, Textbook Edition industry PPT template

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