2. An incline plane with friction making an angle of 30 degrees with the horizontal has a pulley at its top. A 30-kg block on the plane is connected to a freely hanging 20-kg block by means of a cord passing over a pulley. Initially the block is at rest when the cord is suddenly cut. M1 M, On the diagram below, show all the applied forces on the blocks when it moves up the plane. a. b. Determine the normal force applied on the block by the surface. с. Find the coefficient of friction.
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- PLease don't provide handwritten solution... A mass of 25 kg wooden crate is placed on a metal incline that makes an angle of 37 ̊ relative to the horizontal. The coefficients of friction for metal on wood are = 0.5 and = 0.3. a. Make a sketch of the situation. b. Make a force diagram for the mass. c. What is the maximum amount of static friction between the crate and the incline? c. Does the crate break free and slide down the ramp?A rifle fires a 10-g bullet with a horizontal speed of 300 m/s . The bullet strikes a block of wood and the bullet penetrates to a depth of 12 cm into the wood before coming to a stop. 1. Draw the motion and force diagrams for the bullet while it is coming to a stop. ignore the weight vector . 2. What resistive force (assumed to be constant) does the wood exert on the bullet? 3. How many seconds does it take the bullet to come to rest?2. Consider a set-up with a horizontal table, two masses, a string, and a massless, frictionless pulley as shown in the diagram. Assume the masses are m₁ 1.8 kg and m₂ = 1.2 kg. Also assume that = 0.20 on the table. a. For each mass, identify the forces, draw a free body diagram, and set up equations for Newton's second law. Optionally, you can also write an equation for the 'system' which may be helpful for the next part of the problem. b. Find the acceleration after release. m2
- Q5. Two cars have the same engine and wheels. It is determined experimentally that both cars produce the same force over a 100 meter course. Car A can accelerate twice as fast as Car B. Explain this result using Newton's Second Law. Q6. Michele kicks a 0.75 kg ball with a 45 N force. What is the acceleration of the ball? Q7. Fill in the blanks in the table below, submit your results in the text box by letter [3(a), (b), (c), etc.]: (c) (f) (g) Force (N) +9.3 x 10¹2 N +2.1 x 105 N (i) -15 N +22 N -150 N -225 N (b) (d) (h) mass (kg) 3.0 kg 8.4 x 10³ kg 2.8 x 10-6 kg 67 kg (j) 19 kg 128 kg acceleration (m/s²) (a) +5.5 m/s² -2.0 m/s² +6.2 x 10³ m/s² (e) -1.2 x 108 m/s² -9.8 m/s² -9.8 m/s² -9.8 m/s² -9.8 m/s²A man pushes a 92 kg crate with 272 N of force.. The crate experiences a force of friction of 25 N. a. What is the weight of the crate? b. What is the normal force? c. What is the net force acting on the crate? d. What is the acceleration of the crate?A block with mass m = 7 kg is pushed with a force of = 50 N. Please answer F1 the following: A. Draw a body diagram representing all forces acting on the block. B. If the coefficient of static friction is = 0.4, does the block move? C. The block now starts moving, if the coefficient of kinetic friction is =0.1 μk find .Fk D. Find the acceleration. E. After t = 3 s , how far did the block move? (the initial position and initial Xi velocity are both zero)Vi F. What is the velocity at t= 3 s ?
- A box is being pulled across a level floor by a rope attached to the box The rope is pulling partly upward at an angle of 30 degrees to the horizontal. In this circumstance A. The normal force between the box and the floor is greater than the weight of the box. B. The normal force between the box and the floor is less than the force of gravity on the box. C. The normal force between the box and the floor is the same as the force of gravity on the box. D. Which of the above is correct depends on whether or not the box is accelerating. E. Which of the above is correct depends on whether or not there is friction between the box and the floor. F. None of the above answers is correct.An adventurous Bravestone must cross a river and starts running toward it. As he runs, he notices a rope hanging from a tree limb. He grabs the rope and swings. Which of the following statement is true as Bravestone reaches the lowest point of the swing? a. the tension in the rope is equal to his mass times his acceleration. b. the tension in the rope is greater than his weight. c. his acceleration is downward at . d. the tension in the rope is equal to his weight.Two 19.0 N weights are suspended at opposite ends of a rope that passes over a light, frictionless pulley. The pulley is attached to a chain from the ceiling. 1. What is the tension in the rope? 2. What is the tension in the chain?
- Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 75.0 N, the second a force of 90.0 N, and the mass of the third child plus wagon is 23.0 kg. Assume no friction in this problem. a. Draw a free-body diagram, including all forces acting on the wagon. b. Show the component equations (Fx and Fy) in terms of variables only. c. Calculate the acceleration.A boy applies a horizontal force on a box such that it continues to move at constant velocity. Compare the force of the boy's push to the force of friction acting on the box. a. the boy's force is equal to the force of friction b. the boy's force is less than the force of friction c. the boy's force is much greater than the force of friction d. the boy's force is slightly greater than the force of frictionTwo blocks, A and B, are connected by a rope. A second rope is connected to block B and a steady, horizontal tension force of T=50 Newtons is applied. The system moves at a constant speed across the ground. Block B experiences a friction force of 10 Newtons. A.Draw and label an appropriate force vector diagram for block B. B.What is the friction force acting on block A?