PHYA11H3 Chapter 5: Chapter 5 Force and Motion

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crimsonmule398

12 Dec 2016

School

UTSC

Department

Physics and Astrophysics

Course

PHYA11H3

Professor

Salam Tawfiq

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PHYA11H3 Full Course Notes

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What is a force: a force is a push or a pull, a force acts on an object. Pushes and pulls are applied to something an object. From the object"s perspective, it has a force exerted on it. Agent: something that acts or exerts power: a force requires an agent. If a force is being exerted on an object, you must be able to identify a specific cause (i. e. the agent) of that force: a force is a vector. To quantify a push, we need to specify both a magnitude and a direction: a force can be either a contact force , or a long-range force. Contact force: forces that act on an object by touching it at a point of contact. Long-range forces: forces that act on an object without physical contact. When several forces 1, 2, 3 are exerted on an object.

Related Questions

A car is stuck in the mud. A tow truck pulls on the car with the arrangement shown in Figure P5.24. The tow cable is under a tension of 2 500 N and pulls downward and to the left on the pin at its upper end. The light pin is held in equilibrium by forces exerted by the two bars A and B. Each bar is a strut; that is, each is a bar whose weight is small compared to the forces it exerts and which exerts forces only through hinge pins at its ends. Each strut exerts a force directed parallel to its length. Determine the force of tension or compression in each strut. Proceed as follows. Make a guess as to which way (pushing or pulling) each force acts on the top pin. Draw a free-body diagram of the pin. Use the condition for equilibrium of the pin to translate the free-body diagram into equations. From the equations calculate the forces exerted by struts A and B. If you obtain a positive answer, you correctly guessed the direction of the force. A negative answer means that the direction should be reversed, but the absolute value correctly gives the magnitude of the force. If a strut pulls on a pin. it is in tension. If it pushes, the strut is in compression. Identify whether each strut is in tension or in compression.

orangejellyfish781

A car is stuck in the mud. A tow truck pulls on the car with the arrangement shown in Figure P5.24. The tow cable is under a tension of 2 500 N and pulls downward and to the left on the pin at its upper end. The light pin is held in equilibrium by forces exerted by the two bars A and B. Each bar is a strut; that is, each is a bar whose weight is small compared to the forces it exerts and which exerts forces only through hinge pins at its ends. Each strut exerts a force directed parallel to its length. Determine the force of tension or compression in each strut. Proceed as follows. Make a guess as to which way (pushing or pulling) each force acts on the top pin. Draw a free-body diagram of the pin. Use the condition for the equilibrium of the pin to translate the free-body diagram into equations. From the equations calculate the forces exerted by struts A and B. If you obtain a positive answer, you correctly guessed the direction of the force. A negative answer means that the direction should be reversed, but the absolute value correctly gives the magnitude of the force. If a strut pulls on a pin. it is in tension. If it pushes, the strut is in compression. Identify whether each strut is in tension or in compression.

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peachlizard668

A car is stuck in the mud. A tow truck pulls on the car with the arrangement shown in the figure. The tow cable is under a tension of 2500 N pulls downward and to the left on the pin at its upper end. The lite pin is held in equilibrium by forces exerted by the two bars A and B. Each bar is a strut; that is, each is a bar whose weight is small compared to the forces it exerts and which exerts forces only through hinge pins at its ends. Each strut exerts a force directed parallel to its length. Determine the force of tension or compression in each strut. Proceed as follows. Make a guess as to which way (pushing or pulling )each force acts on the top pin. draw a free-body diagram of the pin. Use the condition for equilibrium of the pin to translate the free-body diagram into equations. From the equations calculate the forces exerted by struts A and B. If you obtain a positive answer, you correctly guessed the direction of the force. A negative answer means that the direction should be reversed, but the absolute value correctly gives the magnitude of the force. If a strut pulls on a pin. it is in tension. If it pushes, the strut is in compression. Identify whether each strut is in tension or in compression.

salmonmole681

PHYA11H3 Chapter 5: Chapter 5 Force and Motion

PHYA11H3 Full Course Notes

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