Truck Definition and 311 Threads

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...

Hello, I have a question on a flywheel. I have been racking my brain over this for months, and still no good answer.I i have a 4 wheel drive truck, that is 4,500.lb. 100hp at 4,000.rpm, and 200lb. ft at 2,000.rpm, at the flywheel. The vehical drives at 50mph at 2,500.rpm. with a 1 to 1 final...

A truck driver is carrying a crate of eggs to a local gorcery store. When the driver gets off the highway, he makes a sharp left turn. According to Newton's Laes, what will happen to the crate of eggs? a. The crate will slide to the right in the truck. b. The crate will slide to the left in...

Homework Statement A refrigerator is approximately a uniform parallelepiped h = 8 ft tall, w = 3 ft wide, and d = 2 ft deep. It sits upright on a truck with its 3 ft dimension in the direction of travel. Assume that the refrigerator cannot slide on the truck and that its mass is 130 kg. For...

A car weighing m kg, and a truck, weighing 4m kg, collide at an angle of alpha. Initially they are traveling at the same velocity. After the collision they move off together at an angle of theta. a) show that tan(theta) = (4 sin alpha) / (4 cos alpha + 1) b) Show that if their initial...

A large truck is to transport 30,000 Kg of orange pre-cooled to 4oC under average temperature of 27oC. The structure of the walls of the truck is such that the rate of heat transportation is UA=80W per oC temperature difference between the ambient and the oranges. From past experience, ambient...

Homework Statement A truck is traveling down a 15º incline. The truck then begind to break (decelerate) at a rate of 4 m/s. A crate sits on top of the truck bed..Determine the coefficient of friction to keep the crate from sliding on the truck bed. If the truck were to accelerate up a 15º...

1. Hi, I'm trying to find the speed that a truck rolling down a hill which brakes have failed. The hill has a drop of 85 meters vertically and a horizontal of 1510 meters. The hill is like a right angle where the bottom right is the 90 degrees. The bottom left is 3.2 degrees and the top right...

Hi everyone, I was looking for a std to calculate stability of truck mounted crane. Recently I found an australian std "australian code of practice for crane installation on truck" (I think it is a part of 1418 au std), and I found it simple and practical. But, when I tried to solve the example...

Earlier this week, a tow truck driver was preparing to tow away a vehicle in an apartment complex. In the middle of hooking the cable from the SUV to the tow truck in order to drag it up onto the flatbed, the driver ran out, jumped into her car, and drove off. She snapped the cable from the...

How to calculate Energy absobed by the components of a Truck Cab after crash test?? Hi, I have a question regarding the calculation of internal energy of components after collision. In conducting the frontal impact test as per the ECE R29 regulation, a swing bob has to hit the front of...

I think that cell phones shouldn't be banned for truck and bus drivers. I don't think we should discriminate against someone just because they drive a truck. However, I believe that the trucking companies should be allowed to decide whether or not they want to permit their truckers to use cell...

Homework Statement hiya, I have a question here ; A truck driver traveling at 100km/h puts his truck into neutral just as the trurck starts up an incline of 15° above horizontal. a) calculate how far the truck will travel before it comes to a stop? Homework Equations We haven't...

Hi Kind of a random question, I know, I just think this is a great place to get a answer. Anyway, I have a single cab pickup truck. So of course I have a very light back-end, to compensate for this in the winter for more traction I have been putting in a solid steel plate my Dad bought...

Homework Statement A 30.0 kg packing case is initially at rest on the floor of a 1500 kg pickup truck. The coefficient of static friction between the case and the truck floor is 0.30 and the coefficient of kinetic friction is 0.20. Before each acceleration given below, the truck is traveling...

Homework Statement A crate sits unrestrained on the back of a flatbed truck traveling along a straight road at a speed of 80km/hr. The driver applies a constant braking force and comes to a stop in a distance of 22m. What is the minimum coefficient of static friction between the crate and the...

distance between front and rear wheels of the truck is 3.50m. total upward force on front wheels is 12300N and rear wheels is 9180N. (I have already calculated that the center of mass is 1.28 m behind the front wheels). Now a 4850N object is added to the tailgate 4.23m from the front wheels...

we have a truck in our game we have a rod against the wall of that truck, and we know the acceleration of truck when the rod start slipping... we just want to know what is acceleration and of rod when it start slipping.

A car with a mass of 964.0 kg is traveling at a speed of 63.3 km/hr. At what speed (in km/hr) will a 3530.7 kg truck have the same amount of momentum as the car?

A truck covers 80 m in 17 s while smoothly slowing down to a final speed of 5.6 m/s a ) find its original speed b) Final its acceleration I want check my answer : a ) Dx = 80 m t = 17 s v = 5.6 m/s v0= ?? by appling the rule Dx = 1/2(v+v0)t 80 = 1/2(5.6 + v0) 17 v0 =...

Homework Statement A 4000 kg truck is parked on a 15 degree slope. what is its friction force? please show work, i'd like to understand how to do this problem *** my college professor doesn't really teach in class, well let me take that back. he teaches some things but leaves us...

Homework Statement [PLAIN]http://img28.imageshack.us/img28/7341/capturehzm.jpg Homework Equations Fg=mg Ft=ma Ftx=Ftsin(22) Fty=Ftcos(22) Fg-Fty=? I realize this is probably required but I don't know where. The Attempt at a Solution I believe the acceleration the question is...

Homework Statement An un-tethered block sits on a flatbed truck as it accelerates up an incline that makes an angle of 15° with respect to the horizontal. If the truck speeds up at a rate less than 2.10 m/s2, the block remains on the truck. If the truck speeds up at a rate equal to or greater...

Homework Statement A child is running at her maximum speed of 4.0 m/s to catch an ice-cream truck, which is stopped at the side of the road. When the child is 20 m from the truck, the ice-cream truck starts to accelerate away at a rate of 1.0 m/s^2. Does the child catch the truck...

Homework Statement A truck travels at a constant speed of 28.0 m/s in the fast lane of a two-lane highway. It approaches a stationary car stopped a the side of the road. When the truck is still 125 m behind the car, the car pulls out into the slow lane with an acceleration of 2.6 m/s2. How...

Hi Gents, new guy here. I'm an ME by degree ( 25 years ago.) but it's been a while since I've done any real number crunching. ( Got moved to management.) Especially in EE areas. So here is my question. I have a couple of small 12V lead acid batteries in the 2.5-7Ahr range that I use to power...

I could use some help starting my homework. The problem set up is as follows: #1: Facility Location Suppose we want to locate an airstrip somewhere in the desert where airplanes can land to drop off food aid, which will be trucked to various refugee camps. The camps are located and...

How many Hp would an electric motor need to reliably power a half ton 4x4 truck? Thanks

Homework Statement I want to know if I drew this free body diagram correctly. Information about the problem: 1:The truck has a load which is the black park as it goes up the incline. It doesn't have a load when it goes down the hill. 2:The truck is rear wheel driven. 3:The truck has...

http://www.harborfreight.com/1-2-half-ton-capacity-pickup-truck-crane-1647.html I bought this truck crane for my father. How could i calculate the force needed on the handle to lift a given load? I could measure it but I am interested in how the math is done. For simplicity i'll assume the...

I bought this truck crane for my dad. I want to calculate the mechanical advantage of it. http://www.harborfreight.com/1-2-half-ton-capacity-pickup-truck-crane-1647.html I know how to calculate the mechanical advantage of a hydraulic jack and of a lever but I am not sure about where...

Trying to calculate the impact of an 8000 lb. truck moving at a rate of 55mph, hitting a 200 lb deer that is standing still in the middle of the road. Does assuming it is a localized hit make any difference? What i mean is, if the deer was hit from the back, and his 200lb wieght was focused in...

Homework Statement A truck is traveling at 40 m/s on a slippery road. The driver slams on the brakes and the truck starts to skid. If the coefficient of kinetic friction between the tires and the road is 0.30, how far will the truck skid before stopping? Homework Equations ma=-ug V^2...

Homework Statement http://screencast.com/t/ZTk3NDUxNjU I need help with understanding number 18. Homework Equations Center of mase formula: m1x1+m2x2/(all masses) The Attempt at a Solution How do you tell if adding the weight will make the truck tipover. I calculated that...

Homework Statement A tow truck drags a stalled car along a road. The chain makes an angle of 30 deg with the road and the tension in the chain is 1500 N. How much work is done by the truck in pulling the car 1 km? Homework Equations The Attempt at a Solution What I'm confused...

Homework Statement What is the coefficient of friction between the road and the wheels of a 1400kg truck accelerating at 2 m/s/s if the force applied by the engine to the wheels is 4000N. Homework Equations Fn = m * g Ff = mu * Fn The Attempt at a Solution I do not know how to...

Homework Statement A truck on a straight road starts from rest, accelerating at 2.00m/s^2 until it reaches a speed of 20.0m/s. Then the truck travels for 20.s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.00s. a) How long is the truck...

1. The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows down uniformly with an acceleration of -5.60 m/s2 for 4.20s making skid marks 62.4m long that end at the tree. With what speed does the truck strike the tree? Homework Equations I'm guessing that...

A crate of books is to be put on a truck with the help of some planks sloping up at 33◦. The mass of the crate is 100 kg, and the coefficient of sliding friction between it and the planks is 0.4. You and your friends push horizontally with a force ~F . The acceleration of gravity is 9.81...

Homework Statement A truck travel 400 meters north in 80 seconds, and then it traveled 300 meters east in 70 seconds. The magnitude of the average velocity of the truck is most nearly: a) 1.2 m/s b) 3.3 m/s c) 4.6 m/s d) 6.6 m/s e) 9.3 m/s Homework Equations \bar{v} = Δx/Δt The...

In one of my undergrad books on physics is the example of a rail truck of mass M on a frictionless railroad moving at a constant speed v, which is being filled with sand at a rate of x kg/s If force F is applied to the truck, then the truck does not accelerate because F=m \frac{dv}{dt} +...

http://img691.imageshack.us/img691/5753/98144291.jpg this is the solution found in the solution manual, http://img693.imageshack.us/img693/6536/67143924.jpg I didn't understand the part of taking the derivative part, that is how does this http://img22.imageshack.us/img22/8125/87467649.jpg...

hi i am doing physics 30 by modules after doing it by class. and i am having a hard time working this question out. A car with a mass of 1400kg is westbound at 50km/h. it collides at an intersection with a northbound truck having a mass of 2000kg and traveling at 40km/h. what is the inital...

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 420 Hz. How much time will it take for the truck to get from your position to the fire...

A truck carrying a 65.4kg crate accelerates from rest to 61.3km/hr on a flat horizontal surface in 15.2s The acceleration was not constant. HOw much work was done on the crate by the truck? W=Kf-Ki W=(1/2*65.4kg*220680000^2)-0 W=1.59e18 Is this correct?