A weight of 100 kg was dropped onto a platform with a mass of 400 kg moving along a horizontal
| April 25, 2021 | education
A weight of 100 kg was dropped onto a platform with a mass of 400 kg moving along a horizontal path at a speed of 0.4 m / s. Which one became the platform speed.
Task data: m1 (mass of the platform moving along the horizontal path) = 400 kg; V1 (initial platform speed) = 0.4 m / s; m2 (mass of the cargo dropped onto the platform) = 100 kg.
The speed of the platform after the fall of the load is determined from the equality (law of conservation of momentum): (m1 + m2) * V1.2 = m1 * V1, whence V1.2 = m1 * V1 / (m1 + m2).
Calculation: V1.2 = 400 * 0.4 / (400 + 100) = 0.32 m / s.
Answer: The platform speed after dropping the load became equal to 0.32 m / s.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
