Truck Definition and 305 Threads

Homework Statement Homework Equations ƩFx=0 ƩFy=0 ƩM=0 The Attempt at a Solution I will call the tire forces A (for the trailer), and B and C (for the truck) I got the correct answer for A by isolating the trailer and writing this equation for it: ƩMD = 2400*9 - 2*A*11 = 0...

Homework Statement Which head-on collision between a small car and a large truck causes a larger conversion of kinetic energy: one in which their initial momenta are the same magnitude, or one in which their initial kinetic energies are the same? Assume the same kinetic energy for the...

Homework Statement Hearing the siren of an approaching fire truck, you pull over to the side of the road and stop. As the truck approaches, you hear a tone of 460 Hz; as the truck recedes, you hear a tone of 410 Hz. How much time will it take for the truck to get from your position to the...

Homework Statement A crate of eggs is located on the back of a truck. The truck rounds a circular bend in the road with radius of 35 meters. If the coefficient of static friction between the crate and the truck is 0.6, what is the maximum speed the truck can go without the crate...

A truck with a width of 2,40 and height of 3,41 is driving through a tunnel that is formed like a half circle and has the radius of 3,60. Will it work? Now, this is a very pathetic question because this is junior high level geometry. I could blame the incapacity to solve this question on...

Calculating friction force on a truck on an incline? Homework Statement A 4200kg truck is parked on a 20 degree slope. How big is the friction force on the truck? The coefficient of static friction between the tires and the road is 0.90.Homework Equations F=ma Ff=mu*m*a The Attempt at a...

Homework Statement A car is moving at an acceleration such that a 5kg block in the back of the remains still on a ramp at 35*. The ramp is frictionless, whereas the coefficient of friction between the truck and the road is μ=0.1. If the truck weighs 12000kg, what is the force the trucks...

I having a little trouble grasping the 3rd law because of this idea in my head about a situation where a large truck going very very fast hits a person standing still. 1)Lets say the truck is going fast enough where the person's body will slightly rupture due to the impact. How can that tiny...

Question: A car is initially 4.0km/h south of a gas station and is moving at a constant speed of 55km/h due north. A truck is initially 6.0km north of the gas station and is moving at a constant speed of 45km/h due south. How far are the vehicles from the gas station when they pass each other...

Homework Statement A block is on the platform of an accelerating truck. The coefficient of static friction between the block and the platform is 0,25. What is the minimum time in which the truck can accelerate so that the block won't slide. During the acceleration the truck travels 75 meters...

Homework Statement The driver of a car wishes to pass a truck that is traveling at a constant speed of 20m/s. Initially, the car is also traveling at 20m/s and its front bumper is 24m behind the trucks rear bumper. the car accelerates at a constant 0.600 m/s^2 , then pulls back into the...

A flatbed truck and Static Friction and Crate "breaking loose" Homework Statement A flatbed truck is going downhill on a slope of 10 degrees at a constant speed of 20 m/s (a little over 50mph). A crate of 500 kg is sitting on the flatbed , without being attached by ropes or cables. The...

Hi, I am trying to find out the roll center of a truck's cab. I went over a similar thread in which jack action explained the concept of roll center. But I am having trouble applying it to something like the cab. It does not really have wheels or a multi-link suspension system like a car...

Homework Statement A truck is loaded with a large box, which is a uniform rectangular solid 1.8 m tall, 1.0 m wide, and 1.2 m deep. The box sits upright on a truck with its 1.0 m dimension in the direction of travel, and the bed of the truck is sufficiently rough that the load cannot...

Homework Statement A truck with a steel bed carries a wooden box, where μs = 2μk. The box of mass m is in the middle of the bed of length l. If the truck is moving forward with velocity vo but is slowing down, determine the maximum distance the truck can take to stop before the box hits the...

Suppose a fire truck, with a huge tank of water. If the tank is half-full, when you slow down the water's inertia is going to push the truck forward. When it's full, the water can be thought like a solid, so it doesn't have the same effect. The question is: what are the concepts involved in...

I'm LOST! Car is suppose to overtake truck but at what velocity? two cars C and D move in the same direction in parrallel lanes of a straight road. C starts from rest and begins to move with a constant acceleration. at that instat the C begins to move it is overtaken by D, which is moving with...

Homework Statement A mass M = 74.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, as shown in the figure. If the string makes an angle theta = 22° with respect to the vertical, what is the acceleration a of the van...

I need to design studs for a front truck wheel inlcuding the pattern, position, type of stud etc. I am having trouble developing a free body diagram of the wheel studs and finding all the forces on the wheel studs. I know the following info: Max all up mass loaded...

http://www.smartphysics.com/Content/Media/Images/Mechanics/06/acceleratingtruck.png A box rests on top of a flat bed truck. The box has a mass of m = 24.0 kg. The coefficient of static friction between the box and truck is μs = 0.84 and the coefficient of kinetic friction between the box and...

Homework Statement The indicated location of the center of gravity of the 3160-lb pickup truck is for the unladen condition. If a load whose center of gravity is x = 21 in. behind the rear axle is added to the truck, determine the load weight WL for which the normal forces under the front and...

I have calculated that the strong repulsive force between two down quarks is 25.3N. A book that I am reading said that the force of attraction between two quarks is 'equivalent to the weight of a ten tonne truck’, whose force is equals to 98000N. How can I compare the values of these two forces...

Homework Statement The driver of a truck moving at 30m/s suddenly notices a moose 70m straight ahead. If the driver's reaction time is 0.5s and the maximum deceleration is 8m/s^2, can he avoid hitting the moose without steering to one side? The Attempt at a Solution First I found out how...

Homework Statement A car traveling 91 km/h is 200m behind a truck traveling 81 km/h . How long will it take the car to reach the truck? Homework Equations The Attempt at a Solution

I am try to build a 5 axle tractor(twin steer,tri-drive) to pull a heavy haul trailer(jeep 2axle, trailer 3axle, booster 2axle). Overall truck/trailer length 120 feet. I am trying to determine balance points to equally distribute the weights on all axles. I do know that the front steer...

The problems states as follows: A car traveling at 88 km/h is 110 m behind a truck traveling 15 km/h. How long will it take the car to reach the truck? I attached my solution to the problem, which is incorrect; though it is wrong, I was just wondering if anyone could provide their...

Is this an April Fool's joke? https://www.youtube.com/watch?v=Fygtg9qtJpU

Homework Statement A large (15,000-kg) military helicopter lifts a 6000-kg truck straight up out of a danger zone with an acceleration of 4 m/s2. Calculate the tension in the lifting cable. Homework Equations F = ma W = mg The Attempt at a Solution I believe T = 8.3 * 104N...

Homework Statement See attachment Homework Equations The Attempt at a Solution My only question concerns the free body diagram. Why is the line of action of N not go through the mass center? I'm very confused about this. Any help is appreciated thanks.

For your amusement, springboard for other creative activities, playing with big toys. load and unload you can click here or the YouTube logo, lower right corner, same result... YouTube bigger display Rhody...

Homework Statement a ball falls in a truck loaded with sand with velocity v having horizontal and vertical component. The angle under which it enters the truck is α, the mass of the ball is m of the track loaded with sand is M. What happens with the momentum after the collision? The...

Homework Statement a small truck of mass 2.00*10^3 kg traveling at 72.0km/h experiences a force of 1.00*10^4 N for 0.800 s, when the brakes are applied. What is the final velocity? Homework Equations The Attempt at a Solution

Homework Statement The coefficients of friction between the flat bed of the truck and crate are (coefficient of static friction) = 0.8 and (coefficient of kinetic friction) = 0.7. The coefficient of kinetic friction between the truck tires and the road surface is 0.9. If the truck stops from...

A very large truck collides head on with a small car. At the instant of collision the force of the truck on the car is _________ the force of the car on the truck and the magnitude of the acceleration of the truck is __________ the magnitude of the acceleration of the car. I know that the...

Homework Statement i need help with this problem (Online HW) If the force of attraction between a 1035 kg sports car and a 10680 kg cement truck is 3.930×10-6 N, how far are they apart? Homework Equations F = Gm_1m_2/r^2 The Attempt at a Solution

Homework Statement Farhana is late for class and she is ready to do anything to get to school on time. She knows a mattress truck passes her balcony exactly at 8:42 a.m, traveling at a constant 40km/h. If her balcony is 8.21m from the ground and the truck has a height of 3.47. How far must the...

Truck brakes can fail if they get too hot. In some mountainous areas, ramps of loose gravel are constructed to stop runaway trucks that have lost their brakes. The combination of a slight upward slope and a large coefficient of friction in the gravel brings the truck safely to a halt. Suppose a...

I am trying to determine the amount of torque at the drive shaft required to move a truck of mass m from rest, provided that coefficient of friction is sufficiently high so no slipping occurs, and it operates in an ideal environment, with no friction loss, drag etc. Based solely on real world...

Homework Statement A 1 175 kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the back of a 8 900 kg truck moving in the same direction at 20.0 m/s. The velocity of the car right after the collision is 18.0 m/s to the east. (b) What is the change in...

NEED CONCEPTUAL HELP ONLY! A package of eggs (mass 60.0 kg) sits on the flatbed of a pickup truck with an open tailgate. The coefficient of static friction between the package and the truck's flatbed is 0.350, and the coefficient of kinetic friction is 0.250. a) The truck accelerates...

ok, now this is crazy. the story, obviously, is that "A truck carrying President Obama's Presidential seals, podiums and $200,000 worth of audio equipment is stolen north of Richmond." but what about the part that is left unsaid? that is, equipment that sits around unguarded for days. would...

I was hoping some one could help me by giving an equation on how to do this question, I can't seem to find one for it in my notes :/ A box of mass 11.3kg rests on the flat floor of a truck. The coefficients of friction between the box and floor are Us= 0.18 and Uk= 0.16. The truck stops...

dog sliding in a truck. urgent Homework Statement A dog is standing in the tail of a pickup truck. the tail bed is coated with ice causing the force of friction beween the dog and the truck to be zero. The truck is initially at rest, and then accelerates to the right, oving along a flat...

Car Truck Collisins w/ ANGLES! Homework Statement A blue car with mass mc = 431 kg is moving east with a speed of vc = 19 m/s and collides with a purple truck with mass mt = 1298 kg that is moving south with a speed of vt = 12 m/s . The two collide and lock together after the collision...

Sorry for not using the proper post format. I'm typing on my phone and the post template doesn't show up. Question: a box is sitting in the back of a truck which accelerates forward when a traffic light turns green. Which of the following statements is correct if the boxdoes not slip? The...

Homework Statement A truck of mass M and a car of mass m are traveling at the same speed. Suppose M>m. Now the drivers of both vehicles suddenly apply their brakes and the vehicles slide along the road, which has coefficient of kinetic friction uk. the car stops after sliding a distance d...

Homework Statement A truck starts from rest and accelerates at 1 M/S*2 . 4 s later, a car accelerates from rest at the same starting point with an acceleration of 2.7 M/S*2 . Where and when does the car catch the truck? Homework Equations The Attempt at a Solution i have tried many equations...

Hi PF, I have been working quite heavy shifts of late being a truck driver but enjoy a few cans of beer when I can and wanted to know if there is anything I can put together at home that will give me a simple indication of my alcohol reading i.e green or red light. How would I go about...

Here's the problem: 1. An automobile and a truck start from rest and at the same instant, with the automobile initially at some distance behind the truck. The truck has a constant acceleration of 2.10 m/s2, and the automobile an acceleration of 3.4 m/s2. The automobile overtakes the truck after...

Assume you have a brand new Diesel or gas pickup truck of any brand and factory specs you choose. Assume there is a dolly connected to that pickup truck. How many of the same pickup/hitch/dolly combination trucks could the first truck pull if you have them lined up like a train (and the trailing...