February 2012
M T W T F S S
« Mar    
 12345
6789101112
13141516171819
20212223242526
272829  

Winch Boat

Winch Boat
Winch Boat
I need help with this Kenetic energy and Work question?

A boat, of mass 300kg, is winched up a beach, which can be modelled as a slope inclined at 10° to the horizontal. When the boat has travelled 12 m it is travelling at 1ms^-1. If a friction force, of magnitude 500N acts, find the work done by the winch.

The work function WE = Fd + mgh; where F = 500 N, d = 12 m, m = 300 kg, and h = d sin(theta) where theta = 10 deg. Plug and chug.

The physics is this. Work is done to overcome the friction force for 12 meters of pull. Work is also done to lift the boat weight mg to a height h.

The fact that the boat has some velocity while going up the ramp is immaterial to the work done. But, and this is a big BUT, it does determine how much power WE/dt = power is needed to do the work. That is, to hoist it faster and thereby have a shorter time interval dt. your winch needs more power. This results because power = work energy/time interval.



NEW 2000 LB HAND STRAP WINCH BOAT TRAILER AUTO MARINE
NEW 2000 LB HAND STRAP WINCH BOAT TRAILER AUTO MARINE
Paypal   US $24.95
2000LBS Heavy Duty Hand Strap Winch Auto Boat Truck ATV Zinc Plated Steel Gears
2000LBS Heavy Duty Hand Strap Winch Auto Boat Truck ATV Zinc Plated Steel Gears
Paypal   US $35.25
2000 Cable Hand Gear Winch Boat Truck Car Trailer ATV
2000 Cable Hand Gear Winch Boat Truck Car Trailer ATV
Paypal   US $19.99
2000 LB HAND CABLE WINCH BOAT TRAILER AUTO
2000 LB HAND CABLE WINCH BOAT TRAILER AUTO
Paypal   US $24.95
1200lbs STEEL CABLE HAND GEAR WINCH 4 BOAT ATV TRAILER
1200lbs STEEL CABLE HAND GEAR WINCH 4 BOAT ATV TRAILER
Paypal   US $25.99
2000 lbs Hand Steel Cable Winch For Boat Trailer New
2000 lbs Hand Steel Cable Winch For Boat Trailer New
Paypal   US $27.99
Seasense 1000 lb Hand Crank Boat Trailer Winch
Seasense 1000 lb Hand Crank Boat Trailer Winch
Paypal   US $25.00
Hand Crank Winch 600lb w Strap Boat Trailer Tow Marine
Hand Crank Winch 600lb w Strap Boat Trailer Tow Marine
Paypal   US $22.99
NEW 1200 LB BOAT TRAILER HAND WINCH 20 STRAP HOOK MW 1200
NEW 1200 LB BOAT TRAILER HAND WINCH 20 STRAP HOOK MW 1200
Paypal   US $27.99
4 TON H D HAND PULLER WINCH HOOK CABLE HOIST BOAT FENCE
4 TON H D HAND PULLER WINCH HOOK CABLE HOIST BOAT FENCE
Paypal   US $45.90
MARINE RAIDER 1000 LB TRAILER WINCH BOAT PWC TRAILER
MARINE RAIDER 1000 LB TRAILER WINCH BOAT PWC TRAILER
Paypal   US $17.99
2000lb Hand Winch 32ft Steel Cable Boat Trailer ATV
2000lb Hand Winch 32ft Steel Cable Boat Trailer ATV
Paypal   US $29.99
Boat Winch Trailer Winch Hand Crank Winch 1000 LBS
Boat Winch Trailer Winch Hand Crank Winch 1000 LBS
Paypal   US $27.00
NEW 2000 Pound Hand Cable Winch For Boat Trailer New
NEW 2000 Pound Hand Cable Winch For Boat Trailer New
Paypal   US $34.88
HAND OPERATED MANUAL GEAR WINCH FOR BOAT ATV TRAILER
HAND OPERATED MANUAL GEAR WINCH FOR BOAT ATV TRAILER
Paypal   US $59.99
2000 STEEL CABLE HAND OPERATED GEARED PULLER PULLING WINCH FOR BOAT ATV TRAILER
2000 STEEL CABLE HAND OPERATED GEARED PULLER PULLING WINCH FOR BOAT ATV TRAILER
Paypal   US $39.99
BOAT MARINE TRAILER WINCH SINGLE DRIVE 1000LB CAP
BOAT MARINE TRAILER WINCH SINGLE DRIVE 1000LB CAP
Paypal   US $34.99
2000lb Geared Winch Boat Trailer Steel Cable
2000lb Geared Winch Boat Trailer Steel Cable
Paypal   US $34.85
BOAT MARINE TRAILER WINCH 1400LB CAP WITH STRAP
BOAT MARINE TRAILER WINCH 1400LB CAP WITH STRAP
Paypal   US $49.99
Web Hand Ratchet Boat Trailer Winch 600lbs
Web Hand Ratchet Boat Trailer Winch 600lbs
Paypal   US $39.99
Web Hand Ratchet Boat Trailer Winch 1100lbs
Web Hand Ratchet Boat Trailer Winch 1100lbs
Paypal   US $24.95
1500 LB WINCH REESE TRAILER BOAT 2 WAY RATCHET MADE IN USA
1500 LB WINCH REESE TRAILER BOAT 2 WAY RATCHET MADE IN USA
Paypal   US $20.00
2000LBS HEAVY DUTY HAND STRAP WINCH AUTO BOAT TRUCK ATV
2000LBS HEAVY DUTY HAND STRAP WINCH AUTO BOAT TRUCK ATV
Paypal   US $36.99
2000 lb GEARED Gear HAND WINCH Steel Cable Boat Trailer
2000 lb GEARED Gear HAND WINCH Steel Cable Boat Trailer
Paypal   US $45.00
2K LB STEEL CABLE HAND GEAR WINCH FOR BOAT ATV TRAILER
2K LB STEEL CABLE HAND GEAR WINCH FOR BOAT ATV TRAILER
Paypal   US $39.99
Boat Winch Trailer Winch Hand Crank Winch 2000 LBS
Boat Winch Trailer Winch Hand Crank Winch 2000 LBS
Paypal   US $39.99
Fulton 1300 lb Single Speed Boat Trailer Winch w Strap
Fulton 1300 lb Single Speed Boat Trailer Winch w Strap
Paypal   US $44.95
Web Hand Ratchet Boat Trailer Winch 2500lbs with Strap
Web Hand Ratchet Boat Trailer Winch 2500lbs with Strap
Paypal   US $53.00
Hand Crank Winch Boat Trailer
Hand Crank Winch Boat Trailer
Paypal   US $14.99
1200LBS Capacity HD Steel Cable Winch Grip Handle Automotive Boat Puller Pulley
1200LBS Capacity HD Steel Cable Winch Grip Handle Automotive Boat Puller Pulley
Paypal   US $29.25
Powered by phpBay Pro
Kayak & Canoe Lift Hoist Kayak For Garage / Canoe Hoists 100 lb Capacity Lifetime Warranty by RAD Sportz Kayak & Canoe Lift Hoist Kayak For Garage / Canoe Hoists 100 lb Capacity Lifetime Warranty by RAD Sportz

List Price: $99.95

 

Description

Tired of your canoes and kayaks taking up all your free space in the garage? Turn to the Rad Sportz kayak/canoe lift hoist, which stores your boat overhead and out of the way. The hoist is equipped with a smooth pulley, latch, and hook system, which let you easily lift products as heavy as 100 pounds...

Features

  • Hooks are designed with a rubber coating to protect from scratches
  • Easy to install and easy to use
  • Robust engineering allows you to lift heavy products--100lb. capacity
  • For Ceilings up to 12ft.
  • Safe locking mechanism prevents accidental release
Master Lock 2953AT 12-Volt DC Portable Winch Master Lock 2953AT 12-Volt DC Portable Winch

List Price: $110.36

 

Description

No need to buy a winch for each vehicle or trailer, this portable DC-powered unit mounts to any hitch or flat surface to haul in that boat, vehicle, trailer, and more! The winch can be temporary or permanently mounted to either a ball-mount hitch or a flat surface...

Features

  • 12-volt portable winch with remote and hand crank
  • Attaches to ball mount or a flat surface with plate
  • Capacities: 2000-pound pulling, 5000-pound marine, 6,000-pound rolling
  • Includes power battery cables, remote, back-up hand crank and safety hook
  • Convenient built-in carrying handle; 1-year warranty
Neiko Bicycle Lift, Hoist Ceiling Mount Bike Storage Neiko Bicycle Lift, Hoist Ceiling Mount Bike Storage

List Price: $39.99

 

Description

Don't let bikes take over your garage - store bikes safely up and out of the way. Twin pulley system gently lifts bike at seat & handlebars with anti-scratch PVC-dipped hooks. Safety locking mechanism prevents accidental release while lowering; rope tie-down cleat included...

Features

  • Don't let bikes take over your garage - store bikes safely up and out of the way
  • Twin pulley system gently lifts bike at seat & handlebars with anti-scratch PVC-dipped hooks
  • Safety locking mechanism prevents accidental release while lowering; rope tie-down cleat included
  • Installs in minutes on ceilings up to 14'; Fits All styles of bikes to 50 lbs
  • Strong all-steel construction with anti-corroding powder coat. One lift lifts and stores one bike
ProGrip 030101 Black Webbing 48 ProGrip 030101 Black Webbing 48" x 1" Transom Tie Down with S-Hooks - Pair

List Price: $14.99

 

Description

Usa Products Transom Tiedown Strap Wear And Weather Resistant Coated Lower Hooks Scuff Pad Clamshell/pr 1 Webbing X 48 Long 900 Lb. Rating All items sold new in original packaging

Features

  • 900 lbs. break strength; 300 lbs. working load limit
  • S-Hooks
  • Black Polyester Webbing
  • Measures 48 ft. x 1 in
Windlass Footswitch Covered Foot Switch All Volt. White Windlass Footswitch Covered Foot Switch All Volt. White

List Price: $62.00

 

Description

Maxwell Windlass Footswitch - COVERED FOOT SWITCH ALL VOLT. WHITE

Features

  • MAXWELL COVERED FOOTSWITCH WHITE
  • Freefall = NONE | Rope Diameter (Inches) = NONE | Amps - Draw = NONE | Vertical/Horizontal = NONE | Boat Length - Max (Feet) = NONE | Chain - Type = NONE
  • 0
ProGrip 031101 Black Webbing 48 ProGrip 031101 Black Webbing 48" x 2" Transom Tie Down with S-Hooks - Pair

List Price: $16.99

 

Description

Usa Products Transom Tiedown Strap Wear And Weather Resistant Coated Lower Hooks Scuff Pad Clamshell/pr 2 Webbing X 48 L 1200 Lb. Rating All items sold new in original packaging

Features

  • 1,200 lbs. break strength; 400 lbs. working load limit
  • S-Hooks
  • Black Polyester Webbing
  • Measures 48 ft. x 2 in
Coast Guard Rescue RC 3.5CH Gyro Helicopter Mini Infrared Remote Controlled SYMA Heli S111G Coast Guard Rescue RC 3.5CH Gyro Helicopter Mini Infrared Remote Controlled SYMA Heli S111G

 

Description

Coast Guard Rescue RC 3.5CH Gyro Helicopter Mini Infrared Remote Controlled SYMA Heli S111G

- Built-in Electric Gyroscope System
- 4-in-1 infrared receiver: Gyro, ESC, Mixer, Receiver
- 6 directional fight: Ascending, descending, turn left, turn right, forward & backward
- Adjustable Trim Control
- Intelligent R/C system
- Newly designed electricity saving function
- High efficient gear slowdown system
- Made of Unique Material to Withstand Crashes
- Flying 5-8 minutes after 30 minutes charging
- Could be charged directly from computer's USB port
- Control Range: around 20 feet
- Power battery: 3...

Features

  • Built-in Electric Gyroscope System for simplest control and extreme stability
  • 4-in-1 infrared receiver: Gyro, ESC, Mixer, Receiver
  • Adjustable Trim Control
  • Omni-directional fight: Ascending, descending, turn left, turn right, forward & backward
  • Color & Frequency may vary
LEGO City Coast Guard Helicopter and Life Raft LEGO City Coast Guard Helicopter and Life Raft

 

Description

Boaters are lost at sea -- it's time to send out the Coast Guard helicopter! When you spot them, lower the self-winding winch, hoist the emergency life raft, and carry it back to shore. Better hurry -- that shark looks hungry! Sides on lift raft open and close...

Features

  • The sides on lift raft open and close, the helicopter's propeller and rotor really spin
  • Open the sides of the helicopter to access the stretcher and equipment; the helicopter is on wheels
  • Lower the winch, hook onto the life raft and press the button to raise it up; measures 13" (33cm) long
  • Includes helicopter, life raft, four minifigures and shark
  • Contains 445 pieces

Leave a Reply

 

 

 

You can use these HTML tags

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>