Question

Помогите пожалуйста! Шарик массой 50г падает с крыши дома высотой 40м на балкон второго этажа, находящийся на высоте 4м от земли. Какую работу совершает при этом падении сила тяжести! Буду очень благодарна, если вы сделаете это на листочке.

Answer 1

Calculation of Work Done by Gravity

To calculate the work done by gravity during the fall of a 50g ball from a roof 40m high to a balcony on the second floor, which is 4m above the ground, we need to determine the change in height and the force of gravity acting on the ball.

The work done by gravity can be calculated using the formula:

Work = Force x Distance

In this case, the force is the weight of the ball, which is equal to its mass multiplied by the acceleration due to gravity. The acceleration due to gravity is approximately 9.8 m/s².

Let's calculate the work done by gravity step by step:

1. Convert the mass of the ball from grams to kilograms: - 50g = 0.05kg

2. Calculate the force of gravity acting on the ball: - Force = mass x acceleration due to gravity - Force = 0.05kg x 9.8 m/s²

3. Calculate the change in height: - Change in height = 40m - 4m

4. Calculate the work done by gravity: - Work = Force x Change in height

Let's perform the calculations:

1. Convert the mass of the ball from grams to kilograms: - 50g = 0.05kg

2. Calculate the force of gravity acting on the ball: - Force = 0.05kg x 9.8 m/s² = 0.49 N

3. Calculate the change in height: - Change in height = 40m - 4m = 36m

4. Calculate the work done by gravity: - Work = 0.49 N x 36m = 17.64 Joules

Therefore, the work done by gravity during the fall of the 50g ball is 17.64 Joules.

Please note that the calculations provided above are based on the given information and assumptions, such as neglecting air resistance.