. As you read this, you are most likely sitting quietly in a chair. Can you conclude, therefore, that you are at rest? Explain
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1. As you read this, you are most likely sitting quietly in a chair.
Can you conclude, therefore, that you are at rest? Explain
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- 38) Help me to solve this question, no handwritten, only typing1. Consider the setup shown below: a block with mass m; sits on a table with friction coefficient u between the table and itself, attached on one side to a spring with stiffness k, and on the other side to a cord with negligible mass that wraps over a frictionless pully and supports a second block with mass m2 that's suspended in the air over the edge of the table. The friction between block 1 and the table is not enough to hold up block 2 so that, when it's released from rest, the spring stretches a distance Ax before the system comes to rest. a. Draw and label a free-body diagram for each block. (Use the gridlines to make sure that the relative lengths of your vector arrows are correct.) k m1 block 1: block 2: m2 b. What is the kinetic friction coefficient between block 1 and the table?1-81 On the surface of the earth the weight of a body is 200 lb. At what distance from the center of the earth would the weight of the body be 100 lb?
- 6. A 500 kg object is hanging from a spring attached to the ceiling. If the spring constant in the spring is 900 N/kg, how far does the spring stretch?2. A 850kg elevator is designed to carry 10 people (m= 50kg) safely, and accelerate upwards at 0.3 m/s^2. What minimum tension should the cable be able to support.2. A 25 kg crate hangs in equilibrium from two strings made from the same material and knotted together as shown. 30° 45° Determine the tension in each of the cables. Note that the tension will be different in each cable.
- 3) A bar with length `, and mass m is held horizontally by two massless cords as in Figure 1. The bar has non-uniform density, so its center of mass xcm is not necessarily at the center of the bar. The left cord attaches to the wall with angle θ, the right with angle φ. Express all answers in terms of m, g, φ, and θ (or subsets thereof). (i) Draw a diagram with all forces on the bar at their respective locations. (ii) What is the tension in the left cord? Give your answer in terms of m, g, θ, and φ. (iii) What is the tension in the right cord? Give your answer in terms of m, g, θ, and φ. (iv) What is the location of the bar’s center of mass xcm relative to the left most point of the bar (as indicated in Figure 1).e) Clearly, there is a force of gravity on the space station and everything inside of it. Yet, the apparent weight of an object aboard the space station is roughly zero, i.e. objects float around relative to the space station as if there is no force of gravity. Explain why objects at the space station appear "weightless", in 1 or 2 sentences. We talked about this in lecture. Nothing too complicated about this.[carpet-18] PLCNA A rope attached to a load of 175 kg bricks lifts the bricks with a steady acceleration of 0.12 m/s² straight up. What is the tension in the rope? * 8. A. 2028_N D. 1976 N 1736_N B. 1645_N E. C. 1894 N F. 1792_N 1--1 PWQLV F₁ Pigshow.jpeg m1 Pig show.jpeg m₂