Câu 24. Một vật nặng m được nối vào sợi dây, đầu còn lại sợi dây nối vào điểm cố định Q (xem hình vẽ). Tác dụng lên vật m một lực không đổi theo phương ngang, khi ở trạng thái cân bằng dây treo hợp với phương thẳng đứng một góc

A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off

The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?

What part of the ear is names after tools, such as the hammer and the anvil?