Question

На рычаг действует сила , равная 0,4 Н. Чему равно плечо этой силы , если момент силы равен 0,2 Н* м ? А)50см ;Б) 20см;В)8 см;Г)40 см;

Answer 1

Дано:

F=0,4 Н.

M=0,2 Н*м.

l=?
________

Решение:

Момент силы - произведение модуля силы, вращающее тело, на ее плечо.

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Answer 2

Question Analysis

The question asks for the value of the lever arm (plеcho) when the force acting on the lever is 0.4 N and the torque (moment of force) is 0.2 N*m. The options provided are: A) 50 cm B) 20 cm C) 8 cm D) 40 cm

To answer this question, we need to understand the relationship between force, lever arm, and torque.

Answer

The lever arm (plеcho) can be calculated using the formula:

plеcho = torque / force

Given that the torque is 0.2 N*m and the force is 0.4 N, we can substitute these values into the formula to find the lever arm.

plеcho = 0.2 N*m / 0.4 N

Simplifying the expression, we find:

plеcho = 0.5 m

Since the options provided are in centimeters, we need to convert the lever arm from meters to centimeters:

plеcho = 0.5 m * 100 cm/m = 50 cm

Therefore, the correct answer is A) 50 cm.