preshoo9941
05.05.2020 •
Physics
Two blocks, with masses m and 3m, are attached to the ends of a string with negligible mass that passes over a pulley,as shown above. The pulley has negligible mass and friction and is attached to the ceiling by a bracket. The blocks are simultaneously released from rest.
(b) Determine the work done by the string on the two-block system as each block moves a distance d.
Solved
Show answers
More tips
- S Society and Politics Will Japan become Russia s Military Enemy?...
- P Philosophy Is Everything We Strive for Eventually Achieved and Destroyed?...
- S Society and Politics Understanding Politics and Its Role in the Development of Civilization...
- P Philosophy Why Did God Create Man and Place Him in Obscurity?...
- S Society and Politics Skoptsy: Who They Are and How They Perform Castration?...
- O Other Childhood Fears: What Many of Us Experienced...
- P Philosophy What is Something for you?...
- H Health and Medicine Why Do Humans Have One Heart?...
- P Philosophy Unbelievable stories of encounters with otherworldly forces...
- O Other How to Accidentally Get a Rare Coin with Your Change and How to Know Its Value?...
Answers on questions: Physics
- P Physics Abox contains 6 black balls and 4 white balls. if two balls are selected at random without replacement, what is the probability that both balls are white ball?...
- P Physics When you jump, you move upward with a certain amount of momentum. earth moves downward with an equal amount of momentum. why doesnt anyone notice earths motion...
- P Physics When a fixed amount of ideal gas goes through thermal expansion what happens to internal energy...
- P Physics David is driving a steady 25.0 m/s when he passes tina, who is sitting in her car at rest. tina begins to accelerate at a steady 2.40 m/s2 at the instant when david passes....
- P Physics You toss a ball straight up by giving it an initial upward velocity of 18 m/s. what is the velocity of the ball 0.50 s after you released it? define the positive y direction...
- P Physics By damming rivers and creating reservoirs, we are . By damming rivers and creating reservoirs, we are . increasing transportation decreasing evaporation increasing evaporation...
- H History How did the federalists and anti federalists interpret the principle of limited government...
- E Engineering Heat escapes from my house by conduction through the walls and roof. The rate of heat loss, q_loss in kJ/hr, is proportional to the difference between the inside temperature...
- E English What do most states require for licensure of dentists? Check all that apply. a degree from an accredited dental school passing written and practical exams certification as a...
- C Chemistry To produce large tomatoes that are resistant to cracking and splitting some seeds companies use the pollen from one variety of tomato plant to fertilize a different variety...
Ответ:
Explanation:
b )
T = 2m₁m₂g / (m₂ + m₁)
= 2 x m x 3m g / 4m
= 14.7 m
Work done by tension on both the masses in moving by distance d
= 2 x 14.7 m x d ( 2 x force x displacement )
= 29.4 md .
Ответ: