Question

Помогите пожалуйста по физике. Найдите длину рычага если к его концам подвешены грузы массой 10 кг и 8 кг.Длина меньш. плеча 2 см.

Answer 1

Меньшая масса вешается на большее плечо. 10кг*2см=8кг*х, х-длина большего плеча. отсюда х=10*2/8=2,5см. если тебе надо длину всего рычага, то надо сложить длины плеч (2+2,5=4,5см).

Answer 2

Finding the Length of the Lever Arm

To find the length of the lever arm, we can use the principle of moments, which states that the sum of the clockwise moments about any point is equal to the sum of the anticlockwise moments about the same point.

Let's denote the lengths of the lever arm as L1 and L2, and the masses of the weights as m1 and m2. The condition for equilibrium is given by the equation:

m1 * L1 = m2 * L2

Given that the mass of the weights are 10 kg and 8 kg, and the length of the shorter arm is 2 cm, we can calculate the length of the lever arm using the above equation.

Using the given values: - m1 = 10 kg - m2 = 8 kg - L1 = 2 cm

We can calculate L2 as follows:

L2 = (m1 * L1) / m2

L2 = (10 kg * 2 cm) / 8 kg

L2 = 20 cm / 8

L2 = 2.5 cm

So, the length of the lever arm to which the 8 kg weight is attached is 2.5 cm.