Turntables for Sale

Direct Drive Curved

force and motion engineering a highway curve?

if a car goes through a curve too fast, the car tends to slide out of the curve, For a banked curve with friction, a fictional force acts on a fast car to oppose the tendency to slide out of the curve, the force is directed down the bank(in the direction water would drain), consider a circular curve of radius R=200m and bank angle ρ , where the coefficient of static friction between tires and pavement is μ. A car without negative lift) is driven around the curve. (A) find an expression for the car speed v(max) that puts the car on the verge of sliding out. (B) on the same graph plot V(max) versus angle ρ for the range 0deg to 50deg, first for μ=0.60 (dry pavement) and then for μ=0.005 (wet or icy pavement). In kilometers per hour, evaluate v(max) for a bank angle of ρ=10deg and for (C) μ=0.60 and (D) μ=0.05.

(A).

∑F_vertical = 0

N cos ρ - µ N sin ρ - mg= 0

N(cos ρ - µ sin ρ) = mg

N = mg/[(cos ρ - µ sin ρ)]

∑F_horizontal = ma

N sin ρ + µ N cos ρ = m (Vmax)²/R

N(sin ρ + µ cos ρ) = m (Vmax)²/R

mg/[(cos ρ - µ sin ρ)](sin ρ + µ cos ρ) = m (Vmax)²/R

divided both side by m,

g(tan ρ + µ)/(1 - µ tan ρ) = (Vmax)²/R

Vmax = √[gR(tan ρ + µ)/(1 - µ tan ρ)]

(B).

V(ρ,µ) = √[gR(tan ρ + µ)/(1 - µ tan ρ)]

So you can plot graph Vmax versus angle ρ and static friction coefficient µ with equation above by yourself.
Good luck...

STI Direct Drive MIGMT201 $88.02 STI Direct Drive MIGMT201

Used Direct Drive $100 In Store Used USED DIRECT DRIVE

Gibraltar Intruder Direct Drive Double Pedal $279.99 Gibraltar Intruder Direct Drive Double Pedal Gibraltar Intruder Direct Drive Double Pedal Description: The 9611DD-DB pedal features a Direct Drive for a fast and responsive feel. Other features include the new Stealth design balanced pedal board and a curved frame with a fixed stabilizer plate for added rigidity and increased feel. You can also adjust the height of the footboard without affecting the spring tension or beater angle. The stabilizer plates comes with Velcro straps to prevent any slippage during playing. The beaters are dual surfaced and self-aligning with non-slip memory locks. Nothing is more important than that right "feel" to your pedal. Turbo-charged. Liquid. Balanced. Powerful. Explosive. In the history of bass pedals, few have been sent to the front lines as often as the Intruder II pedals. Many artists have helped us design and refine what is now considered to be one of the industry's finest feeling and most reliable pedals. Gibraltar Intruder Direct Drive Double Pedal Features: Direct Drive system has a seamless fast responsive feel. Pedal board height adjustment independent of spring tension or beater angle. Fast Rocker hub spring assembly with die cast bearing "Spring Ring". Fixed Aluminum Rock stabilizer plate with rubber non-skid surface. Dual Surface, balanced, self-aligning beater with non-slip memory lock mechanism (Pat no 117,437). Case hardened U-joints on double bass pedals. Comes with fully padded carrying bag (GDPCB). Get your Gibraltar Intruder Direct Drive Double Pedal today!

Gibraltar Intruder Direct Drive Single Pedal $108.99 Gibraltar Intruder Direct Drive Single Pedal Gibraltar Intruder Direct Drive Single Pedal Description: The 9611DD pedal features a Direct Drive for a fast and responsive feel. Other features include the new Stealth design balanced pedal board and a curved frame with a fixed stabilizer plate for added rigidity and increased feel. You can also adjust the height of the footboard without affecting the spring tension or beater angle. The stabilizer plates comes with Velcro straps to prevent any slippage during playing. The beaters are dual surfaced and self-aligning with non-slip memory locks. Nothing is more important than that right "feel" to your pedal. Turbo-charged. Liquid. Balanced. Powerful. Explosive. In the history of bass pedals, few have been sent to the front lines as often as the Intruder II pedals. Many artists have helped us design and refine what is now considered to be one of the industry?s finest feeling and most reliable pedals. Gibraltar Intruder Direct Drive Single Pedal Features: Double Chain Cam Drive gives a solid powerful feel. Pedal board height adjustment independent of spring tension or beater angle. Fast Rocker hub spring assembly with die cast bearing "Spring Ring". Quick-Release ROCK (stabilizer) plates with Velcro. Dual Surface, balanced, self-aligning beater with non-slip memory lock mechanism (Pat no 117,437). Case hardened U-joints on double bass pedals. Comes with fully padded carrying bag (GSPCB) Get your Gibraltar Intruder Direct Drive Single Pedal today!

Gemini TT-2000 Direct Drive Turntable $149.95 Gemini TT-2000 Direct Drive Turntable

Gemini Tt-2000 Direct Drive Turntable $149.95 Gemini TT-2000 Direct Drive Turntable

Numark Tt200 Direct-Drive Turntable $159.97 Numark TT200 Direct-Drive Turntable

Used Technics Sl1510 Direct Drive $199.99 In Store Used USED TECHNICS SL1510 DIRECT DRIVE

Used Barber Direct Drive Overdrive $116.99 In Store Used USED BARBER DIRECT DRIVE OVERDRIVE

W08898 Direct Drive Hair Clipper $118.99 Wahl Direct Drive Hair Clipper made in Germany. Direct Drive, ard Case.

GoPro Curved Adhesive Mounts by GoPro for Jeep $19.99 5 Curved, 3M Adhesive Mounts;Warranty: One Year;Construction: polycarbonate;Adhesive: 3M VHB 4991 double-sided strips;Camera NOT Included; GoPro Curved Adhesive Mounts by GoPro for Jeep

Mapex P900D Raptor Direct Drive Double Pedal $269.4 Mapex P900D Raptor Direct Drive Double Pedal

Yamaha Direct Drive Double Bass Drum Pedal $429.99 Yamaha Direct Drive Double Bass Drum Pedal

Gemini TT-2000 Direct Drive Turntable 889406469686 $112.46 Gemini TT-2000 Direct Drive Turntable 889406469686

Gemini TT-2000 Direct Drive Turntable 889406739758 $112.46 Gemini TT-2000 Direct Drive Turntable 889406739758

Gemini TT-2000 Direct Drive Turntable 889406599956 $112.46 Gemini TT-2000 Direct Drive Turntable 889406599956

Gemini TT-2000 Direct Drive Turntable 889406753266 $112.46 Gemini TT-2000 Direct Drive Turntable 889406753266

Gemini TT-2000 Direct Drive Turntable 889406753211 $127.46 Gemini TT-2000 Direct Drive Turntable 889406753211

Account limit of 2098 requests per hour exceeded.

ETL GCA10G Direct Drive Dekatron

How To Drive Safely At Night And During The Fall

After a summer of vigorous off-road adventures, one headlight beam on Stan's SUV strayed across to the shoulder of the far lane. The other beam lit up the tree line on the right shoulder. Which didn't present much of a problem in the summer, but the days were getting shorter now and Stan spent more time driving at night.

But who has time to have his headlights aligned? Other cars could see him coming, and he had enough light to see almost anything in his path ... except maybe that shadowy animal crossing the road at dusk on rain slick pavement. After Stan ran off the road dodging the animal, Stan finally took the time to get his headlights aligned.

Fall driving presents a variety of obstacles, and more drivers die from September through November than during the winter months of December through February. Slick roads, foggy mornings, and roaming wildlife are just some of the increased hazards.

You must also contend with less daylight and morning and evening sun glare.

Driving In The Dark

Everyone sees less well at night. In fact, you are three times as likely to be involved in a fatal crash at night as during daylight hours. Keep these tips in mind as the seasons change.

* Less light means slow down Drive below the speed limit and increase your following distance.

* Take curves slower, and never overdrive your headlights. Be sure you can stop if something suddenly appears in the roadway.

* Use high beams as much as possible on highways and unlighted streets. Remember, though, low beams are mandatory if you're within 500 feet of another vehicle or in fog. Note: Low beams lose their efficiency at speeds above 40 mph.

* One of the greatest dangers of night driving is sudden light from street lights, neon signs, wet pavements and approaching cars. Try to look away from glare. Use the lines or edge of the pavement on your right side to help guide you.

* Don't try to "out-glare" a vehicle that does not switch to low beams. Be the first to be courteous. Retaliation for bad manners only results in two blinded drivers.

* Take special care on poorly lit, rural roads.

Preventive Maintenance

* Clean and check your headlights regularly. Headlight dirt or misalignment can reduce the distance a driver can detect objects at night by about thirty percent.

* Get your headlights aligned during a regular maintenance stop. If you can't get to a technician, the National Safety Council suggests the following steps:

-You need 35-40 feet of flat or constantly sloped driveway.

-Shine your low beams on a garage door two to three feet away.

-Outline the bright spots with a soft pencil or tape.

-Back the car about 25 feet from the door. The top of the low beams should shine no higher than the top of the marks on the door or lower than the center of the marked circle. If you have two headlights, the high beams are also aimed.

-If you have four headlights, aim the low beams first. Adjust the high beams until the center of the high is at the top of the low beam.

Seasonal Hazards

* To minimize the glare problems at sunrise and sunset, use your visor, and wear sunglasses if necessary. Never wear sunglasses or tinted glasses at night.

* Be wary of drivers who are driving into a glare at your back. Give yourself plenty of room to come to a controlled stop.

* Turn on your headlights whenever you wonder if it's dark enough to use headlights. It will help you see and be seen.

* Clean your windshield inside and out, especially if you are a smoker. Smoke can cloud your windows and diffuse light.

* Keep paper towels or a rag handy in the interior of your car.

* Keep your wipers clean and new. Streaks make glare worse. Check the washing fluid often.

* To avoid skids in rainy weather, slow down. If you do skid, steer in the direction you want the front of the car to go.

* As soon as temperatures start diving into the 30s, slow down before crossing a bridge.

* Deer and other wildlife are active in the fall. If a collision is unavoidable, slow down to reduce the impact. Stay under control.

About the Author

John Myre is the author of the award-winning book, Live Safely in a Dangerous World, and the publisher of the Safety Times Reproducible Articles..

Comments are closed.