Solution to problem 4.2.11 from the collection of Kepe O.E.

4.2.11

Let's calculate the force in rod AB.

From the problem conditions it is known that the force F is equal to 60N.

To find the force in rod AB, it is necessary to solve the force equilibrium equation:

ΣF_x = 0

ΣF_y = 0

ΣF_x = F_ABcosα - F = 0

ΣF_y = F_ABsina - N_A - N_B = 0

where α is the angle between rod AB and the horizon, F_AB - force in rod AB, N_A and N_B - supporting forces at points A and B, respectively.

From geometric considerations it can be determined that α = 30°.

Then:

F_AB = F/cosα = 60H/cos30° ≈ 69.28H

Answer: 69.3H

Based on this problem, it is necessary to calculate the force in rod AB, with a known value of force F equal to 60N. To do this, it is necessary to solve the force equilibrium equation, where α is the angle between the rod and the horizon, F_AB - force in rod AB, N_A and N_B - supporting forces at points A and B, respectively. Thus, by solving the equation of equilibrium of forces and taking into account geometric considerations, one can obtain an answer to the problem posed. Answer: 69.3H.

Solution to problem 4.2.11 from the collection of Kepe O.?.

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The described digital product is a solution to problem 4.2.11 from the collection of problems in physics by Kepe O.?. It can be useful for anyone interested in this topic, including students and schoolchildren. The solution to the problem is presented in a beautiful html format, which provides easy navigation through the text, including formulas and graphs. All calculations and reasoning necessary to solve the problem are written in detail and in an accessible manner, which facilitates the process of studying it. This digital product can be purchased from the Digital Product Store, where it will be available for download immediately after purchase. We guarantee the quality and usefulness of the product, as well as fast and reliable delivery.

The described digital product is a solution to problem 4.2.11 from the collection of problems in physics by Kepe O.?. The task is to determine the force in the rod AB with a known value of force F equal to 60N. To solve the problem, it is necessary to use the force equilibrium equation, where α is the angle between the rod and the horizon, FAB is the force in the rod AB, and NA and NB are the supporting forces at points A and B, respectively. The solution to the problem is presented in a beautiful html format, which allows you to conveniently view text, formulas and graphs.

This digital product can be purchased from the Digital Product Store, where it will be available for download immediately after purchase. We guarantee the quality and usefulness of the product, as well as fast and reliable delivery. The answer to problem 4.2.11 from the collection of Kepe O.? is 69.3H.

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Problem 4.2.11 from the collection of Kepe O.?. consists in determining the force in the rod AB with a known force F equal to 60N. The answer to the problem is 78.0.

To solve the problem, it is necessary to use the relevant laws of mechanics, namely Hooke's law and the law of equilibrium of forces. The first step is to determine the stiffness of the rod, which is expressed through the modulus of elasticity and the cross-sectional area of ​​the rod. Then, using Hooke's law, the deformation of the rod is determined, and then the force acting in the rod.

As a result, by solving this problem, you can obtain the value of the force in rod AB, which is 78.0.

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