A 300kg weight is held aloft by a rope that passes over a pulley and is then tied down. A 100 kg person unties the rope and is pulled into the air as the weight falls. What is this person's acceleration?

A farmer is using a rope and pulley to lift a bucket of water from the bottom of a well that is h, = 9.5 m deep. The farmer uses a force F,= 51 N to pull the bucket of water directly upwards. The total mass of the bucket of water is m; + m, = 3.7 kg. Part (a) Select the correct free body diagram. mg m„gf F mg'm,g m„g m,g F m„gTm,g F m,g F, m„gY m,g m,g Submit Hint Feedback I give up! -Draw your own free body diagram and compare it to the ones listed. |-What forces are acting up, what forces are acting vertically down? Part (b) Calculate how much work Wrin J the farmer does on the bucket of water (via the rope) to raise it to ground level. W,= 484.5 / Correct! Part (c) Calculate how much work W, in J gravity does on the bucket filled with water as the farmer lifts it up the well. W,=- 206.1 W. = -206.1 Part (d) Calculate the net work Wnet in J done on the bucket of water by the two forces F1 and Fg. Wner = 278.37 Wner = 278.4 Feedback: The answer provided was not correct. We have…

An Atwood Machine is set up as shown.  Mass m1 = 2.00 kg and m2 = 3.00 kg.  Assume the connecting string has 0 mass and that there is no friction.   The net force on m2 (in Newtons) is The acceleration of m2 (in m/s2) is

A 33-kg boy rides an elevator. He brought a bathroom scale with him and was very curious of what will be the reading when the elevator moves up and down. If the bathroom scale reading is 45 kg, determine the magnitude and direction of the elevator’s acceleration.

Question 6 6. The masses of the Atwood's machine are M 8.657 kg and m 2.616 kg. The acceleration (m/s2) of the system is:

A car of mass 1000 kg moves along a horizontal highway at a speed of 20 m/s. The braking force needed to bring the car to a halt in 10 s is about * 5 O 1.0 kN 2.0 kN O 3.0 kN O 4.0 kN O 5.0 kN

A 50kg woman stands on a scale in an elevator. What will the scale read when the elevator (in units of Newtons): a. Is accelerating upward at 3m/s? b. Is moving upward at a constant velocity of 6m/s c. Is slowing to a stop at the top with an acceleration of magnitude 2m/s?

A force F produces an acceleration a on an object of mass m. A force 3F is exerted on a second object, and an acceleration 8a results. What is the mass of the second object?  The answer is 3/8 m, but this was a review question but i'm still not 100% sure on why this is the right answer, so could you please explain why this is the right answer and how you found it? thanks!

A stack of two crates is being accelerated upwards by two cables. The cables are directly attached to crate 1 and the tension in each cable is 3248 N. You may assume that the masses of the cables are negligible compared to the masses of the crates. The acceleration of the crates is? bottom crate crate 1 is 109 kg. the top crate is 248 kg.

Let's say an astronaut is walking on the moon and wants to test out some basic kinematics. Because there's no atmosphere, there's no air resistance, so the only thing that can cause an object to move faster on the moon is the moon's gravity. Let's say you have a hammer and a feather, each weighing 10.0 kg and 1.00 kg respectively. When you drop them from a height of 1.65 meters, they should both hit the ground at the same time. The gravity on the moon is around 1/6 of what it is on Earth, so you need to figure out how long it'll take for the hammer to reach the ground.