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Loads and MATERIALS

Loads and MATERIALS. Loads AND MATERIALS

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Loads and MATERIALS

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  1. Loads and MATERIALS

  2. Loads AND MATERIALS 1.1 Electric ChargeDivided into two kinds of electric charge, positive charge and negative charge. When a glass rod rubbed with silk cloth, the electrons toward the glass rod so that the stem glass silk fabric shortage of electrons, and the glass rod becomes positively charged. When a plastic rod rubbed with wool, wool electrons leading to a plastic rod so that the excess electron plastic rod, and plastic rod becomes negatively charged.Two charged objects repel each type and two charged objects is not a type of attraction.

  3. 1.2 Conductors and insulators Materials silver, copper, and aluminum that can be electrified or easily deliver an electric current is called electrical conductors, while materials of rubber and plastic that can not be electrified or difficult to deliver an electrical current is called electrical insulators.Some materials, such as germanium and silicon can behave sometimes as conductor and sometimes as an insulator. These materials are called semiconductors

  4. 1.3 Coulomb's LawStyle of interaction between two objects electrically charged point comparable to the charge of each, and inversely proportional to the square of the distance between the two charges.Interaction style works on the connecting lines between these two charged objects. Interaction style of attraction, when the mutant is different marks, and repelling if marked with same.Pristiwa above is known as Coulomb's Law.

  5. y q1 q2 x A charged point object located at position vector q1, q2 and the charged object is in a position vector.Vector position relative to q2 q1 isUnit vector in the direction writtenQuantitatively, the force on q1 due to q2 can be written as follows:

  6. Example 1:We have 2 pieces of the charged point objects. One is located at coordinates (2.0) with the charge q1 = 10 C, and the other is located at coordinates (5.4) with the charge q2 = -5 C. Determine the vector forces acting on the charge because the Coulomb force by q2 q1. The position coordinates expressed in km.

  7. q2 q2 q1 q1 q3 q3 q4 q4 Gaya oleh beberapa buah muatan Gb.1.3 (a) The vector position of qi, q2, q3 and q4 (b) The relative position q1 to q2, q3 and q4If q1, q2, q3 and q4 is firmly in their respective positions, the resultant force acting on q1 due to q2, q3 and q4 arethe force between q1 and q2, the force between Q1 and Q3, and so on.So the force on q1 by charge is a superposition of several interaction force between q1 with each charge.

  8. Example 2:Four cargo mounted respectively at coordinates (0,3), (1,4), (4.0), and (0, -3). The price of each cargo is q1 = -2 C, q2 = 1 C, q3 = 3 C, and q4 = -1 C. Calculate the resultant force on q3. The position of the charge expressed in meters.

  9. +3μC -5μC +8μC Exercise Problem!Three point charges are placed on the x axis as shown. Determine the net force on the charge-5μC caused by two other charges! Determine the ratio of Coulomb electrical force to gravitational force FG FE between the two electrons in a vacuum!Muatan2 who looked at the picture. Determine the force on the charge 4μC due to two other charges! 20 cm 30 cm +4μC 20 cm 20 cm 60o +3μC +2μC 60o

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