2. Two blocks connected by a string passing over a pulley are on ramps inclined at 32 degrees and 25degrees. The mass of block #1 is 1.8 kg and the mass of block #2 is 1.0 kg. Between block #1 and itsramp, the coefficients of static and kinetic friction are 0.15 and 0.10, respectively. There is no frictionbetween block #2 and its ramp. The system is released from rest and the blocks move. The pulley ismassless and frictionless, so you can ignore the pulley.b.C.d.32°25°Draw a free body diagram (FBD) for each block. Include all of the forces acting on the twoblocks.Apply Newton's Second Law to each block to obtain an equation for the forces acting on eachblock in the x-direction and an equation for the forces acting on each block in the y-direction.Consider the information provided about this system. When the blocks are released fromrest, what direction will the blocks move? Explain why?Calculate the acceleration of the blocks.I

To draw the freebody draw the block, equation of forces acting in x and y direction,direction of…

Draw a free body diagram (FBD) for each br blocks. Apply Newton's Second Law to each block block in the x-direction and an equation for the Consider the information provided about t rest, what direction will the blocks move? Exp the accele of the blocks.

Draw a free body diagram (FBD) for each br blocks. Apply Newton's Second Law to each block block in the x-direction and an equation for the Consider the information provided about t rest, what direction will the blocks move? Exp the accele of the blocks.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.24P: A uniform plank is supported by a fixed support at A and a drum at B that rotates clockwise. The...

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A hand pushes horizontally with a constant force on two blocks stacked against a wall (u, between finger and block A is zero). The blocks and wall do not accelerate. The mass of block A is greater than that of block B. The coefficient of static friction between the block and wall is the same as the coefficient of static friction between the two blocks. Draw a separate free-body diagram for each block. For each force on your free-body diagrams, be sure to indicate: • the type of force (e.g., tension, weight ...), • the object on which the force is exerted, and • the object exerting the force. a. Rank the magnitudes of the vertical forces that you have shown from largest to smallest. Explain how you applied Newton's second and third laws to obtain your answer. b. Suppose the hand pushes horizontally with a constant force that is twice as large as in part a. Would the friction force exerted by the wall be greater than, less than, or equal to the friction force by the wall in part a?…
6.6. The coefficients of static and kinetic friction for stone on wood are, respectively, 0.5 and 0.4. If a 150-kg stone statue is pushed with just enough force to start it moving across a wooden floor and the same force continues to act afterward, find the statue's acceleration.
Mary and her sister are playing with a cardboard box on the neighborhood hill. Mary climbs into the box, the total mass of the box with Mary in it is 115 kg. The box starts at rest at the beginning of the incline. The hill is at an incline of 28 degrees with respect to the horizontal.The static and kinectic friction between the box and hill is 0.4 and 0.2 respectively. Assume the box is sliding downhill. a. What is the magnitude of the acceleration of the box? (same as Problem 3b)b. If the hill is 5m tall, what is the Mary's speed when she reaches the bottom?c. At the bottom of the hill, the ground becomes level, but the coefficients offriction do not change. How far will Mary slide before she comes to a stop?
A block with a mass of 100 kg (left-block) is connected to another block of mass M (right-block) by a cable that passes over a fixed drum as shown below. The coefficient of static friction between the left-block and the floor is 0.45, between the right-block and floor is 0.4, and between the cable and the fixed drum is 0.25. Ignore tipping (overturning). Determine the minimum mass of the left-block for which motion does not occur.
2) Figure 3 illustrates a first block having mass M1 positioned on a horizontal tabletop. The contacting surfaces between the 1st block and the tabletop have a coefficient of kinetic friction Uk. An ideal rope extends horizontally from the 1st block to an ideal pulley and then vertically downward to a 2nd block having mass M2. Initially, the 2nd block is traveling downward with speed Vo. At some later time, the 2nd block has been displaced a distance H and its speed is Vf. Rope Pulley M, Friction M, Figure 3 Determine expressions {M1, M2, Hk, H, g, Vo} for the following: H (a) Work done by gravity onto the system of 2 blocks; (b) Work done by the normal force onto the system of 2 blocks; (c) Work done by tension onto the system of 2 blocks; and (d) final speed, Vt.
5. Three blocks are connected over two frictionless, massless pulleys by two inextensible, massless cords as shown in the figure. There is friction between block m and the horizontal surface of the table. If the block m, moves downward after being released from rest, then what is the magnitude of the acceleration of the blocks and the magnitude of the tension in the cords in terms of the masses of the blocks m, , and ms, the coefficient of kinetic friction between block my and the table, a. and the acceleration due to gravity, g. Include a force diagram or free-body diagram of the situation.
For the given system below, the coefficient of static friction between surfaces are fAB = 0.20, fBC = 0.10 and fD = 0.15. Block B impends to slide to the right. The resultant of friction and normal force exerted by C on B makes an angle of:
The controlling force curve of a spring controlled governor is a straight line. The weight of each governor ball is 40 N and extreme radii of rotation are 10 cm and 17.5 cm. If the values of the controlling force at above radli are 205 N and 400 N respectively and friction of mechanism is equivalent to 2.5 N at each ball. Find The extreme equilibrium speeds of the governor. (1) The equilibrium speed and coefficienct of insensitiveness at a radius of 15 cm
Figure 2 В A Block A is hanging from a massless string which runs over a massless and frictionless pulley and connects to Block B. Block B slides over an inclined plane with ordinary kinetic friction. The plane under block B is inclined at an angle theta = 0 away from vertical. The other side of Block B is connected to another massless string which runs over another massless and frictionless pulley to connect to Cart C. Cart C rolls without friction over a plane which is inclined at an angle of phi = y away from vertical. C
A 250 N block is initially at rest on a flat surface that is inclined at 15°. If the coefficient of the kinetic friction is 0.30 and the coefficient of static friction is 0.40, find the force along the incline required to start the block moving up the plane.
2. A 250-lb block Is initially at rest on a flat surface that is inclined at 30°. If the coefficient of kinetic friction is 0.30 and the coefficient of static friction is 0.40, find the force required to start the block moving up the plane. 250 1b. 30°
Three boxes are placed on the incline in contact with each other and released from rest. The coefficients of static friction under boxes A, B, and Care 0.30, 0.20. and 0.35, respectively. Describe what happens. C. 30 lb 40 lb A 20 lb 0.35 0.20 15 H, = 0.30 %3D