Question

Определите работу, совершаемую при подъеме тела массой 40 кг на высоту 80 см

Answer 1

Для начала нада найти слу 
F=mg
F=40*9.8=392H
А патом работу
A=F*S
S=см=0,8м
A=392H*0,8м=313,6 Дж
и всё

Answer 2

1) Fтяж = mg = 40 кг * 10 Н/кг = 400 Н; 2) А = FS = 400 H * 0,8 м = 320 Дж. Ответ: 320 Дж.

Answer 3

Calculating Work Done in Lifting a 40 kg Object to a Height of 80 cm

When lifting a 40 kg object to a height of 80 cm, the work done can be calculated using the formula:

Work (W) = Force (F) × Distance (d)

Where: - Force (F) is the force required to lift the object. - Distance (d) is the vertical distance over which the force is applied.

Calculating the Force Required

The force required to lift the object can be calculated using the formula:

Force (F) = mass (m) × acceleration due to gravity (g)

Where: - mass (m) is the mass of the object. - acceleration due to gravity (g) is the acceleration experienced by an object due to the gravitational force.

Given: - Mass (m) = 40 kg - Acceleration due to gravity (g) = 9.81 m/s^2

Using the formula, the force required (F) can be calculated as follows: F = 40 kg × 9.81 m/s^2

Calculating the Distance

The distance over which the force is applied is given as 80 cm, which needs to be converted to meters for the calculation.

Distance (d) = 80 cm = 0.8 meters

Calculating the Work Done

Now, using the calculated force and distance, the work done in lifting the 40 kg object to a height of 80 cm can be determined:

Work (W) = Force (F) × Distance (d)

Substitute the values: W = (40 kg × 9.81 m/s^2) × 0.8 meters

Therefore, the work done in lifting the 40 kg object to a height of 80 cm can be calculated using the above formula.