2. A 1.45-kg block slides across a rough surface. such that it slows down with an acceleration of 1.22 m/s'. What is the coefficient of kinetic friction between the block and the surface?
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- A 48-kg crate is placed on an inclined ramp. When theangle the ramp makes with the horizontal is increased to 26°,the crate begins to slide downward. (a) What is the coefficientof static friction between the crate and the ramp? (b) At whatangle does the crate begin to slide if its mass is doubled? Show your work and explain.1. Pulling up on a rope, you lift a 4.35-kg bucket of water from awell with an acceleration of 1.78 m / s2. What is the tension inthe rope? Show your work and explain.A 7.7-N force pulls horizontally on a 1.6-kg block that slides on a smooth horizontal surface. This block is connected by a horizontal string to a second block of mass m2= 0.83kg on the same surface. (a) What is the acceleration of the blocks? (b) What is the tension in the string? (c) If the mass of block 1 is increased, does the tension in the string increase, decrease, or stay the same? Show your work and explain.
- Draw the complete free body diagram of a a 1000.0 kg block being pushed forward 10.0 N by a penguin, pushed backwards by Mr. Universe with 200.0 N, and an elephant pushing it forward with 410.0 N of force. Calculate the acceleration that this block experiences, and in what direction does it move. How much frictional force and in what direction must it be applied such that the block undergoes static equilibrium? plz show work so I can understandA 525 N block is on a rough, horizontal surface with an applied horizontal force as shown in Figure 1. (a) If a force of 295N is required to start the block in motion, what is the coefficient of static friction, us? (b) If force of 205 N is required to maintain the block at constant velocity, what is the coefficient of kinetic friction, uk?A rope exerts a force of 25N on a box at an angle of 34 degrees from the horizontal a)what is the horizontal component of the force on the box? B) what is the vertical component of the force on the box? Show your work.
- Suppose your car was mired deeply in the mud and youwanted to use the method illustrated to pull itout. (a) What force would you have to exert perpendicular tothe center of the rope to produce a force of 12,000 N on thecar if the angle is 2.00°? In this part, explicitly show how youfollow the steps in the Problem-Solving Strategy for Newton’slaws of motion. (b) Real ropes stretch under such forces.What force would be exerted on the car if the angle increasesto 7.00° and you still apply the force found in part (a) to itscenter?a) CALCULATE the acceleration of a 300,000 kg jumbo jet, just before takeoff when the thrust of each of its 4 engines is 36,000 N. If the jumbo jet take off speed is 184 mph, b) CONVERT 184 mph to m/s and c) DETERMINE how many seconds would it take for the plane to reach this speed? Show your work and round your answer to the nearest hundredth***IMAGE IS ATTACHED*** Block 1 sits on block 2 on a rough surface, and block 2 is pulled left by a string. Block 1 is moving with Block 2 without slipping.What is the direction of friction f12 on block 1 by block 2? left right does not exist Tries 0/2 What is the direction of friction f1S on block 1 by the floor surface? left right does not exist Tries 0/2 What is the direction of friction f21 on block 2 by block 1? left right does not exist Tries 0/2 What is the direction of friction f2S on block 2 by the floor surface? left right does not exist Tries 0/2
- Water going over a fall splashes on the rocks 20 m below. (a) What is the water’s velocity at the bottom of the fall, assuming ? = 0 at the top? (b) If 20 kg of water flows over the fall per second, how much force do the rocks exert on the falling water? (Assume the water comes to a stop once it hits the rocks.) please show your work, including diagrams, algebraic equations, and enough written explanations that somebody who is not familiar with the problem could understand what you are doing.Pulling the string on a bow back with a force of 28.7 lb, an archer prepares to shoot an arrow. If the archer pulls in the center of the string, and the angle between the two halves is 138°, what is the tension in the string? Show your work and explain.A 1,500-N crate is being pushed across a level floor at a constant speed by a force F of 370 N at an angle of 20.0° below the horizontal, as shown in figure a below. (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) (b) If the 370-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a).