Describe each class of lever and explain to characteristics of each

Physics

2 answers:

Nataly [62]3 years ago

8 0

-- Class I lever

The fulcrum is between the effort and the load.

The Mechanical Advantage can be anything, more or less than 1 .

Example: a see-saw

-- Class II lever

The load is between the fulcrum and the effort.

The Mechanical Advantage is always greater than 1 .

Example: a nut-cracker, a garlic press

-- Class III lever

The effort is between the fulcrum and the load.

The Mechanical Advantage is always less than 1 .

I can't think of an example right now.

harina [27]3 years ago

6 0

Answer:

First Class of Lever: In this, Fulcrum is always changes the direction of the input force and can be used to increase the force or the distance. Second Class of Lever: In this, Fulcrum does not change direction of the input force & Output force is greater than the input force. Third Class of Lever: In this, the input force is between the fulcrum and the load does not change the direction of the input force. Here, Output force is less than input force.

Explanation:

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Ali mixes 20g of Sodium Chloride in 100g of water at 15 Degree °C. Calculate the mass of the solution

Lera25 [3.4K]

Answer:

The mass of the solution is 120 g.

Explanation:

The mass of the solution is given by:

$m_{sol} = m_{1} + m_{2}$

Where:

$m_{sol}$ : is the mass of the solution

$m_{1}$ : is the mass of the solvent

$m_{2}$ : is the mass of the solute

In the solution, the solvent is the majority compound (in mass) and the solute is the minority (in mass), so the solvent is the water and the solute is sodium chloride.

Hence, the mass of the solution is:

$m_{sol} = m_{1} + m_{2} = 100 g + 20 g = 120 g$