To pull an old stump out of the ground, you and a friend tie two ropes to the stump. You pull on it with a force of 500 N to the north while your friend pulls with a force of 450 N to the northwest. The total force from the two ropes is A. less than 950 N. B. exactly 950 N. C. more than 950 N.
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- If only one force acts on an object, can it be in equilibrium?Explain.3) A 76.0-kg person is being pulled away from a burning building as shown in the figure. a. Draw a free body diagram for the person hanging onto the ropes. b. Calculate the tension in the two ropes if the person is momentarily motionless. 15° W T₂ 0.10⁰A bucket that has a mass of 10 kg when filled with sand needs to be lifted to the top of a 15 meter tall building. You have a rope that has a mass of 0.2 kg/m that must be secured to the bucket. It takes 1 meter of rope to secure the bucket. Once the bucket reaches the top of the building it only has mass 5 kg because there was a hole in the bottom and sand was leaking out at a constant rate while it was being lifted to the top of the building. Find the work done lifting the bucket (sand and rope) to the top of the building. Joules
- 14. Cars that are moving along horizontal roads are going to be stopped by plowing into identical barriers. All of the cars are the same size and shape, but they carry loads with different masses. All of the cars are going to be stopped by the same constant force by the barrier. Rank the distance that will be needed to stop the cars with the same force. * C 8 mis 6 m/s 8 m/s 4 m/s m= 1000 kg m= 1600 kg m= 1200 kg m= 1600 ke a. All are the same b. B > C > A > D c. B = C > A > D O d. B = D > C > A Sign out 964. You have been tasked with retrieving a crate from a 4-m long beam that is suspended by two cables, as shown. While standing 1.5 m from the left edge of the beam, you silently hope that the cables are strong enough to hold the weight of the beam, the box, and you! The masses of the beam and you are 10 kg and 70 kg, respectively. The cables are rated for a tension of 1000 N. Do the cables hold? In other words, what is the tension in each cable? Hint: you can assume the box is sitting on the very end of the beam. 30° 20° 4.0 m4. A spider builds its web in a window frame that is lying on the ground. It is supported by four main strands. Calculate the force of tension in strand 4 assuming the web is stable. The tensions in the other three strands are as follows: strand 1: 21 mN [N 20° E] strand 2: 16 mN [S 60° E] strand 3: 18 mN [S 40° W] Draw a FBD diagram of the event, and neatly explain and detail each step to solve the problem.
- 8. Consider a 50-N weight suspended by two wires as shown. If the magnitude of vector F, is 35 N, find the angle a and the magnitude of vector F2. 60 50A high jumper with a body weight of 900N exerts an average vertical force of 2150N down on the floor for 0.50 s. The average vertical force exerted on the jumper by the floor is: a. 2150N b.1640N c. 900N d.3050NA bucket that has a mass of 30 kg when filled with sand needs to be lifted to the top of a 25 meter tall building. You have a rope that has a mass of 0.1 kg/m that must be secured to the bucket. It takes 1 meter of rope to secure the bucket. Once the bucket reaches the top of the building it only has mass 24 kg because there was a hole in the bottom and sand was leaking out at a constant rate while it was being lifted to the top of the building.Find the work done lifting the bucket (sand and rope) to the top of the building.
- De 600 N 4 m 900 N 4 m A -6m 22- forces in member [ED] : F(ED) forces in member [DC]: F(DC) forces in member [BC] : F(BC) Which following one is TRUE? O A) F(EC)=1500 N O B) F(DC).cos37 = F(BC) O F(DC).sin37 = F(ED) O D) F(ED).sin53- F(DC) O E) F(ED).cos53 = F(DC)2. Imagine you are trying to move a very heavy box, and it does not move. Then, you get a friend to help you push and it begins to slide. Explain, in terms of the quantities discussed in this investigation (Fk, тах Hs,Fk9 Hk) what is happening to the box in these two cases.The distance between two telephone poles is 44.0 m. When a 1.00-kg bird lands on the telephone wire midway between the poles, the wire sags 0.180 m. Draw a free-body diagram of the bird. How much tension does the bird produce in the wire? Ignore the weight of the wire.