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Referring to Example 6-15 (a) At what speed will the
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- A car of mass m is moving on a level circular track of radius R. If µ, represents the static friction between the road and tyres of the car, the maximum speed of the car in circular motion is given by - (1) Rg/H, (2) /mRg/µ, (3) VH,Rg (4) JH,mRgarrow_forwardSkid marks left by the driver are 56.0 m long and the roadway is level. Tires matching those on the car of the driver have been dragged over the same roadway to determine that the coefficient of kinetic friction between the tires and the roadway is 0.82 at all points along the skid mark. The speed limit on the road is 35 mi/harrow_forwardA 50-kg object moves along the inclined plane under the tension I=(300+150√1)N (where t is in seconds) of the motor device. The coefficient of kinetic friction between the object and the inclined plane is 44 = 0.4. If the velocity of the object is v = 2m/s when t=0, its velocity is m/s when t=2s. (Express the answer to three significant figures and g-9.81m/s²) 12m/s 30°arrow_forward
- You are trying to slide a sofa across a horizontal floor. The mass of the sofa is 2.0 x 102kg, and you need to exert a force of 3.5 x 102N to make it just begin to move. (a) Calculate the coefficient of static friction between the floor and the sofa.(b) After it starts moving, the sofa reaches a speed of 2.0 m/s after 5.0 s. Calculate the coefficient of kinetic friction between the sofa and the floor.arrow_forwardA car is moving at 20 m/s along a horizontal road has its brakes suddenly applied and eventually comes to rest. What is the shortest distance in which it can be stopped if the friction coefficient between tires and road is 0.90? Assume that all four wheels brake identically. If the brakes don't lock the car stops via static friction.arrow_forwardlooking at a ski slope, the length of the slope is 10.00x10^2m and the top of the slope is at an angle of 8.00 degrees relative to the horizontal. Once the slope has ended the skier continues along a level horizontal before stopping. The coefficient of kinetic friction between the skis and the snow is 0.090 on both the slope and the straight horizontal section. What is the distance that the man travels on this horizontal section, assuming that the man started from the rest at the top of the slope.arrow_forward
- Block A in Fig. 6-56 has mass mA = 4.0 kg, and block B has mass mB 2.0 kg.The coefficient of kinetic friction between block B and the horizontal plane is mk= 0.50.The inclined plane is frictionless and at angle u= 30°.The pulley serves only to change the direction of the cord connecting the blocks. The cord has negligible mass. Find (a) the tension in the cord and (b) the magnitude of the acceleration of the blocks.arrow_forwardA cube of mass m is initially at rest at the highest point of an inclined plane, which has a height of 4.1 m and makes an angle of θ = 19° with respect to the horizontal. After letting go of the object, you notice it to be traveling at v = 0.65 m/s a distance d after the end of the inclined plane as shown. The coefficient of kinetic friction between the cube and the plane is μp = 0.1, and the coefficient of friction on the horizontal surface is μr = 0.2. 1)What is the speed of the cube, in meters per second, just after it leaves the inclined plane? 2) Find the distance, d, in meters.arrow_forwardProblem 4: A crate of mass m is initially at rest at the highest point of an inclined plane, which has a height of 4.3 m and has an angle of 0 = 22° with respect to the horizontal. After being released, you perceive it to be moving at v = 0.15 m/s a distance d after the end of the inclined plane as shown. The coefficient of kinetic friction between the crate and the plane is u, = 0.1, and the y coefficient of friction on the horizontal surface is u, = 0.2. initial Final h d Otheexpertta.com Part (a) What is the speed of the crate, in meters per second, just after it leaves the inclined plane? Vbottom = sin() cos() tan() 7 8 9 HOME cotan() asin() acos() E 4 6 atan() acotan() sinh() 1 2 3 cosh() tanh() cotanh() + END O Degrees O Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: Feedback: 0% deduction per feedback. Part (b) Find the distance, d, in meters. All content © 2021 Expert TA, LLCarrow_forward
- The figure shows a container of mass m1 = 4.9 kg connected to a block of mass m2 by a cord looped around a frictionless pulley. The cord and pulley have negligible mass. When the container is released from rest, it accelerates at 2.2 m/s? across the horizontal frictionless surface. What are (a) the tension in the cord and (b) mass m2? (al Number Units The absolute tolerance is ± 0.1. (b) Number Units This answer has no units * (degrees) Save for Later Attempts: 0 of 3 used Submit Answer m kg m/s m/s^2 N/m kg-m/s or N-s N/m^2 or Pa kg/m^3 m/s^3 timesarrow_forwardA microwave oven of mass 10.0 kg is pushed a distance 8.45 m up the sloping surface of a loading ramp inclined at an angle of 38.6 ° above the horizontal, by a constant force F with a magnitude 140 N and acting parallel to the ramp. The coefficient of kinetic friction between the oven and the ramp is Part F Assuming that the oven is initially at rest, use the acceleration to calculate the oven's speed after traveling a distance 8.45 m Take the free fall acceleration to be 9.80 m/s . Express your answer using two significant figures. 0.280. m/s Submit Request Answer Part G From this, compute the increase in the oven's kinetic energy. Take the free fall acceleration to be 9.80 m/s² . Express your answer using two significant figures. K = J Submit Request Answer P Pearson Copyright © 2022 Pearson Education Inc. All rights reserved. Terms of Use | Priyacy Policy I Permissions | Contact Us I 10:37 PM 4/17/2022 е nere to search acel TIT IIarrow_forwardA car of mass m is moving on a level circular track of radius R. If µ, represents the static friction between the road and tyres of the car, the maximum speed of the car in circular motion is given by - (1) Rg/H, (2) mRg/µ, (3) JH,Rg (4) Ju,mRgarrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning