Soru
5) In the scenario where the object Kon a frictional surface is released from rest along with 2 kg keobjects, and their motion is analyzed, given that the gravitational acceleration the objects is g=10m/s^2 friction mu =0.1 a) Draw the free-body diagrams of the 2 kg, 3 kg. and 5 kg objects (5 points) b) Calculate the magnitude of the acceleration for each of the 2 kg, 3 kg, and 5 kg objects. (5 points) c) Determine the tension forces in the ropes connected to the 2 kg and 3 kg objects. (10 points)
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4.6
(269 Oylar)
Süleyman
Elit · 8 yıl öğretmeni
Uzman doğrulaması
Cevap
Let's analyze the given problem step by step.### Part (a): Free-Body Diagrams1. **2 kg Object:** - Weight (
):
downward. - Normal force (
): 20 N upward. - Frictional force (
):
opposite to the direction of motion. - Tension force (
) in the rope connected to the 3 kg object.2. **3 kg Object:** - Weight (
):
downward. - Normal force (
): 30 N upward. - Frictional force (
):
opposite to the direction of motion. - Tension force (
) in the rope connected to the 5 kg object. - Tension force (
) from the rope connected to the 2 kg object.3. **5 kg Object:** - Weight (
):
downward. - Normal force (
): 50 N upward. - Frictional force (
):
opposite to the direction of motion. - Tension force (
) from the rope connected to the 3 kg object.### Part (b): Calculate the Magnitude of the AccelerationAssuming all objects are connected and move together with the same acceleration
:The net force acting on the system is the sum of the forces minus the frictional forces:
The total mass of the system:
The total frictional force:
Since there is no external force pulling the system, the net force is due to the frictional forces only:
Using Newton's second law:
The negative sign indicates that the acceleration is opposite to the assumed direction of motion.### Part (c): Determine the Tension Forces in the Ropes1. **Tension in the rope connected to the 2 kg object (
):**For the 2 kg object:
2. **Tension in the rope connected to the 3 kg object (
):**For the 3 kg object:
Therefore, the tensions in the ropes are:-
-
This result suggests that the objects are not accelerating relative to each other, and the entire system is moving as a single unit under the influence of friction.