40,(II) A roller-coaster car shown in Fig. 6-41 is pulled up to point 1 where it is released from rest. Assuming no friction, calculate the speed at points 2, 3, and 4. 3 bo 4 26 m 32 m 14 m 4 2 FIGURE 6-41 Problems 40 and 50.

Q: A roller coaster starts with a speed of 10.0 m/s at a point 45 m above the bottom of a dip. Neglect…

A: Let A to be the point which is 45 m above the bottom of the dip and B to be the point which is 30 m…

Q: "At a post office, a package of mass 1.3 kg is pushed down a slanted chute with an initial speed of…

A:

Q: In the figure, a frictionless roller coaster car of mass m - 815 kg tops the first hill with speed…

A:

Q: A car traveling at constant speed has net work pf zero done on it. True or false?

A: According to the work energy theorem, the net work done on a particle equals the change in kinetic…

Q: At what average power must the engine of a car with a mass of 1.7 × 10³ kg, moving on an 11% slope…

A: SOlution: given that m = 1.7 × 10³ kg v = 31 km/hr =8.61 m/s slope =11%

Q: A body is projected with speed 4m/s up along the greatest slope of a smooth ramp inclined at 30° to…

A: Required 1) Distance up the incline 2) Distance up the incline and velocity at the original point.

Q: A 0.13-kg ball is thrown upward with an initial speed of 12 m/s, Calculate the gravitational…

A: Given, Mass of ball (m) = 0.13 kg Thrown Upward with initial velocity (v)= 12m/s We want to find…

Q: Question 9) During a board game called Rat Trap0, mechanical contraptions are activated in a…

A: The given values are, m=50.0 g=0.05 kgEloss=2.0 Jhi=17 cm=0.17 mhf=4.0 cm=0.04 mvf=13 m/s

Q: Location Height(m) Start A B C D E F 40.0 25.0 28.0 12.0 6.0 14.0 0 PE(J) KE(J) III Energy 0…

A: Given:-  The mass of the roller coaster is m = 400 kg  The height of the roller coaster is h = 40 m…

Q: A 5.00-kg crate is sitting on the ground at rest. An electric motor with an efficiency of 0.20 (20%)…

A:

Q: In the figure below, a small block is sent through point A with a speed of 9.5 friction until it…

A: A fundamental law of physics and chemistry states that the total energy of an isolated system…

Q: A 4.00-kg block is set into motion up an inclined plane with an initial speed of v, = 8.20 m/s (see…

A: Since you have posted a question with multiple subparts , we will solve the first three subparts for…

Q: Consider a roller coaster that moves along the track shown in the figure below. Assume all friction…

A: Step 1: Step 2: Step 3: Step 4:

Q: A box lies on a plane at an angle θ = 15° to the horizontal, with μs = 0.39 and μk = 0.35 between…

A:

Q: A 46.6-g golf ball is driven from the tee with an initial speed of 41.3 m/s and rises to a height of…

A:

Q: In the force non- conservative, the * work done depends on final point initial point The initial and…

A: The force is classified into two catogories:- Conservative force  Non-conservative force

Q: A typical automobile engine has an efficiency of 25%. Suppose that the engine of a 1000-kg…

A: We know a typical automobile engine has an efficiency of 25 %. we have to find the maximum grade…

Q: If a box is initially sliding across a floor at velocity v. After a short time, it comes to rest.…

A: Friction is easily defined as the force that holds back a sliding object. kinetic friction is a part…

Q: At point B, a 240.0 kg roller coaster car is moving at 22 m/s. Assuming no friction from points A to…

A:

Q: (a) How high a hill can a car coast up (engine disengaged) if friction is negligible and its initial…

A: Given: Initial speed of the car = 90 km/hr Mass of the car = 750 Kg Height of the hill = 16 m Angle…

Q: A crate is given a push across a horizontal surface. The crate has a mass m, the push gives it an…

A: The work done by the push on the crate is converted into kinetic energy, which is then dissipated by…

Q: Question 16 A 2.9-kg cannonball is fired straight up with an initial velocity of 39 m/s. Taking the…

A:

Q: A 10-kilogram block is released as quickly as possible from point A on the ABC path. Since the…

A:

Q: GO Figure 7-28 shows three forces applied to a trunk that moves leftward by 3.00 m over a friction-…

A:

Q: In a roller coaster the ride includes a vertical drop of 120 m. Suppose that the coaster  has a…

A: Given, Height of fall,h=120 m Speed at top,u=4 m/s

Q: In a city in England with a temperature of 18 ° C, it is desired to install a wind farm with 10 wind…

A: Power output from a turbine is given by the expression, P=12ρAV3P=12ρπr2V3P=12ρπr2V3r=2PρπV3

Q: A force ~F=(6x5 N)i + (2y N)j acts between (x1,y1)= (2m, 3 m) to (x2; y2)=(3 m, 0 m).Calculate the…

A: Given :          F =( 6x⁵ i + 2y j .)N          x1= 2m  , x2 = 3m          y1= 3m   ,y2= 0m  We know…

Q: You push a box up an inclined plane at a constant speed As the box moves up the incline, Select one…

A: Required : The potential energy and the kinetic energy of the box.

Q: Using energy considerations (and not kinematics), find the speed a drag-free object would have to be…

A:

Q: A man cleaning a floor pulls a vacuum cleaner with a force of magnitude 60 N at an angle 45° with…

A: Work done: A force exerted on the body and total displacement of the body gives work done. Work is…

Q: A 98 kg bicyclist traveling 15 m/s coasts up a 5 m high incline. After reaching the top of the…

A:

Q: A roller coaster starts with a speed of 5.7 m/s at a point 49 m above the bottom of a dip.…

A:

Q: A small block is sent through point A with a speed of 11 m/s, as shown in the figure. Its path is…

A:

Q: &5

A: Given that:Mass of the baseball, m=0.25 kgSpeed of the ball is 40 m/sAngle of inclination of ramp is…

Q: Current Attempt in Progress In the figure, a frictionless roller coaster car of mass m = 815 kg tops…

A:

Q: A roller coaster is pulled up to a point A, 30.0 m above the ground where it and its screaming…

A:

Q: The object was pushed up to speed v over a frictionless comb plane with an inclination of 30…

A:

Q: Part of the route of a roller coaster is as follows:  Determine: The ETOTAL en A The  ETOTAL en B…

A: According to conservation law of energy, Total energy of roller coaster is remains constant at every…

Q: A variable force F = kx² acts on a particle which is initially at rest. Calculate the work done by…

A:

Q: I place a 10 kg box at the top of a ramp that is inclined at 25 degrees. It then slides 8 m down the…

A:

Q: The force acting on a particle varies as shown in Figure 18 P 7.14. Find the work done by the force…

A:

Q: Examples 3: Consider a block that is free to slide down a smooth, frictionless plane that is…

A:

Q: Vi= 0 m/s h;= 92.6 m VE = 0 m/s h= 0m A skier, starting from rest slides down a snow covered ramp…

A: Given,Coefficient of the friction between the ramp and the skier, μ = 0.1and the ramp angle of, θ =…

Q: A small 25g toy rocket is launched straight up from the ground at 144 km/h (a) What is the  kinetic…

A: Given : m = 25g = 0.025 kg v = 144 km/h = 40 m/s h = 220 m

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.