A person is standing on a ramp of oak boards that is at an angle ? to the horizontal, as shown below. She is not sliding down the ramp. She is wearing leather-soled shoes. The coefficient of static friction for leather on oak is 0.6. (a) Draw a diagram of all the forces acting on the person. (1 mark) (b) What condition on the forces in this system is necessary for the person to start sliding? (0.5 mark) (c) What is the maximum angle of the inclined surface for the person to not slide? (3.5 marks)
A person is standing on a ramp of oak boards that is at an angle ?...
A 7.75 kg block is sent up a ramp inclined at an angle ?=29.5° from the horizontal. It is given an initial velocity ?0=15.0 m/s up the ramp. Between the block and the ramp, the coefficient of kinetic friction is ?k=0.339 and the coefficient of static friction is ?s=0.616. How far up the ramp in the direction along the ramp does the block go before it comes to a stop? Image of box on ramp. Ramp is inclined upward at...
17. A S2 N box is sliding down a ramp inclined at an angle of 30 with the horizontal at constant v diagram below velocity, as shown in the a. O n the diagram, draw the three force vectors acting on the box, including the weight, normal force, and friction force. Label each vector with its symbol, indicating force type b. Calculate the component of the weight acting parallel to the ramp. (2) Calculate the component of the weight acting...
A "Super slide" at a carnival is essentially a ramp 35 meters long tilted at an angle of 18 degrees. People sit on blankets at the top of the slide, slide down to a flat section, and then slide to a stop. The coefficient of kinetic friction between the blankets and all parts of the slide is 0.24. b) Draw a diagram that shows the forces acting on the rider as she goes down the slide If you need to...
A flat straight grass slide makes an angle of 28° with the horizontal and is 12 m long. A mat starts sliding from rest at the top of the slide. The mat has constant acceleration and it reaches a speed of 2.5s at the bottom of the slide. Let the mass of the mat be m (in kg) and the coefficient of sliding friction between the mat and the slide be μ 12 m mat 283 Model the mat as...
1) Consider a box of mass m sitting on an inclined plane. The inclined plane makes an angle θ with the horizontal and the coefficient of static friction between the box and the surface is μ. What minimal condition must exist if the box is to accelerate down the incline? A) mgsinθ < μFn B) mgsinθ = μFn C) mgsinθ > μFn D) mgcosθ > π 2) You observe a packing crate sliding down a long, inclined ramp at constant...
2. A 5 kg block sits at rest on an inclined ramp which makes an angle of 24 degrees with respect to the horizontal. It is noted that even if the angle 0 is increased the block still does not slip. The coefficient of static friction for the bottom surface of the block and the surface of the ramp is us= 0.56. The magnitude of the frictional force acting on the block must be O 1 O O A. 50...
Monash College MCD 4270 Engineering Design Informal Assessment 10: (Sem1 2016) Name ID Number: As shown in igure 6 below, a block of mass 3 kg sits on a ramp that is inclined at an angle of S0 degrees to the horizontal. On top of this block rests another block of mass 2 kg. The two blocks are connected by a cord that passes over a frictionless pulley. The coefficient of static friction between all surfaces (i.e., between the two...
Question 5 15 marks You should be able to answer this question after studying Unit 10 A crate, initially at rest, is pushed along a straight line up a rough ramp that makes an angle of 18° with the horizontal. The magnitude of the pushing force is 33 N, in a direction parallel to and up the ramp, and the acceleration of the crate is 0.16 ms-2. The coefficient of sliding friction between the crate and the ramp is 0.35....
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VU22475 Apply Scientific Principles to Engineering Problems Calculate the maximum deceleration of a car that is heading down a 8 slope (one that makes an angle of 8 with the horizontal). You may assume that the weight of the car is evenly distributed on all four tires and that the coefficient of static friction is involved - that is, the tires are not allowed to slip during the deceleration. The...
(1) A 4m ladder has mass m= 10 kg. We assume that its centre of mass is half-way along its length. The ladder is leaning against a wall at an angle of 30° from the vertical, as shown in the figure. Suppose that the wall is frictionless smooth and slippery), and that the coefficient of static friction between the feet of the ladder and the floor is H. =0.6. Take the acceleration due to gravity to be g=10m/s" directed vertically...