Physics, 04.03.2020 01:27 jsbdbdkdkkd5104
A horizontal uniform plank is supported by ropes I and II at points P and Q, respectively, as shown above. The two ropes have negligible mass. The tension in rope I is 150 N. The point at which rope II is attached to the plank is now moved to point R halfway between point Q and point C, the center of the plank. The plank remains horizontal. What are the new tensions in the two ropes?
The answer is T1=100N and T2=200N but I don't know the steps to solve this one. An explanation would be much appreciated.
Answers: 2
Physics, 21.06.2019 23:00
1point) a skydiver weighing 130 lb (including equipment) falls vertically downward from an altitude of 14,000 ft and opens the parachute after 20 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.85|v|0.85|v| when the parachute is closed and is of magnitude 17|v|17|v| when the parachute is open, where the velocity vv is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. find the speed of the skydiver when the parachute opens. speed is 150.6121788 ft/s find the skydiver's height when the parachute opens. height is 2338.98591 ft find the limiting velocity vlvl after the parachute opens. (think about whether this should be positive or negative.) vl=vl= 7.647 ft/s
Answers: 2
Physics, 22.06.2019 03:00
Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law
Answers: 2
Physics, 22.06.2019 05:40
The difference between a red shift and a blue shift has to do with wavelength frequency. t or f
Answers: 1
A horizontal uniform plank is supported by ropes I and II at points P and Q, respectively, as shown...
Mathematics, 30.03.2021 14:00
Computers and Technology, 30.03.2021 14:00
English, 30.03.2021 14:00
Social Studies, 30.03.2021 14:00
Physics, 30.03.2021 14:00
History, 30.03.2021 14:00
Mathematics, 30.03.2021 14:00
Chemistry, 30.03.2021 14:00
Mathematics, 30.03.2021 14:00
Physics, 30.03.2021 14:00
Mathematics, 30.03.2021 14:00
History, 30.03.2021 14:00
Mathematics, 30.03.2021 14:00
Mathematics, 30.03.2021 14:00
Mathematics, 30.03.2021 14:00