Problem 1: A box is pulled up by a rope at a constant speed. If its mass 20 kg, its speed is 3 m/s, and the vertical distance of travel is 25 m, what is the work done by the rope on the box?

Problem 2: A box is pulled up by a rope at a constant acceleration. If its mass 30 kg, its upward acceleration is 1.5 m/s2, and the vertical distance of travel is 17 m, what is the work done by the rope on the box?

If we wanted to find out how period and spring constant : if we wanted to find out how period and spring constant relate to each other how would we go about finding the spring |

The hole must have a diameter of b 25 mm determine the : the aluminum plate of thickness t 3.5 mm. is to be designed so the maximum stress remains below 100 mpa. the hole must |

Suppose you plan to retire in 40 years if you make 10 : suppose you plan to retire in 40 years. if you make 10 annual investments of 1000 into your retirement account for |

Wesson metals has an outstanding loan that calls for equal : wesson metals has an outstanding loan that calls for equal annual payments of 9768.46 over the life of the loan. the |

A box is pulled up by a rope at a constant acceleration if : problem 1 a box is pulled up by a rope at a constant speed. if its mass 20 kg its speed is 3 ms and the vertical |

What additional factors enter into this definition of : what additional factors enter into this definition of company valuation when the company is doing business in an |

If the cold-air assumptions can be applied determine how : a four cylinder two stroke diesel engine has a cut-off ratio of 1.8 and a compression ratio of 22. it operates with an |

A specific automotive part that a service station stocks in : a specific automotive part that a service station stocks in its inventory has an 8 chance of being defective. suppose |

The current in the coil had to be set to 0512 a to set the : one can not align the apparatus to eliminate entirely the effects of the earths magnetic field. consider the case where |

## What is the expected output voltage from this generatorA simple generator is designed to operate in the outback of us. The circular loop has a radius of 5.70cm and consists of 200 windings. The armature rotates in a magnetic field of 0.42T at a rate of 3200 revolutions per minute. what is the expected ou.. |

## What is the actual maximum efficiency of his engineWaly Whacko claims to have invented a heat engine that will revolutionize industry. It runs between a hot source at 300oC and a cold sink at 25oC. What is the actual maximum efficiency of his engine |

## What should be the minimum initial speed of the dartWhat should be the minimum initial speed of the dart so that combination makes a complete circular loop after the collision. find the minimum diameter of the raft that would prevent the diamond from being seen. |

## Obtain the magnification of the imageAn arrow is placed 28.7 cm in front of a convex lens (f=15.0 cm). The convex lens is followed by a concave lens (f= 21.5 cm) 12.8 cm fro the convex lens. obtain the magnification of the image |

## What force in newtons does the air bag exert on the chestDuring a front-end car collision from 46.5 km/h and with air bags inflated, the acceleration limit for the chest is 60g as the car comes to rest. What force in newtons does the air bag exert on the chest of a 75.5 kg person |

## Find the banking angleA velodrome track is banked so that a bicycle traveling at 62.8 km/h will have no tendency to slip to either side when traveling on the path that has a radius of curvature of 79.0 m |

## Illustrate what is the safes coefficient of kinetic frictionThe safe slides with a constant speed if Clyde pushes from behind with 420 {rm N} of force while Bonnie pulls forward on a rope with 285 {rm N} of force. Illustrate what is the safe's coefficient of kinetic friction on the bank floor? |

## A block is hung by a string from the inside roof of a vanA block is hung by a string from the inside roof of a van. When thevan goes straight ahead at a speed of 20 m/s, the block hangsvertically down. |

## How many times does each tire rotateA car with 68 -diameter tires accelerates uniformly from rest to 20 in 10. How many times does each tire rotate |

## What net force is acting on the mass along the inclineA 2.0 kg mass starts from rest and slides down an inclined plane 0.80 m long in 0.50 s. What net force is acting on the mass along the incline? |

## What is the maximum allowed braking forceAt the end of an amusement park ride, you want the gondola to stop without the acceleration exceeding 2 g's. what is the maximum allowed braking force |

## Determine what will be the cars new speedA 12,600-kg railroad car travels alone on a level frictionless track with a constant speed of 15.8 m/s. What will be the car's new speed |

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