What is the work done by gravity on the crate

Reference no: EM13495395

A man lifts a 13 kg crate directly upwards from the floor to a shelf (6 m high) at constant speed*. (*Neglect the very start and very end of the lift, where the crate would of course need to be accelerated from/to rest.)

a.) What is the work done by the man on the crate?

b.) What is the work done by gravity on the crate?

c.) What is the net work done on the crate?

Reference no: EM13495395

Questions Cloud

Identified three components of administrative cost : A recent analysis of support staff found a strong correlation with the number of clients served. In contrast, in-house computing and misc. office cost varied directly with the number of computer hours logged and number of client transactions, resp..

Evaluate the heat of formation of ethanol : Then use the estimate to calculate the heat of formation of ethanol from the heats of formation (in KJ/mol) of CO2: -?394, and H2O: -?242.

Compute the standard direct-material cost of a jewelry box : Construct an Excel spreadsheet to solve the preceding requirement. Show how the solution will change if the following information changes: the standard direct labor rate is $14 per hour, and the standard direct-material price is $0.59 per kilogram..

State the combustion of one mole of ethanol : Estimate the enthalpy change for the combustion of one mole of ethanol (C2H5OH) using average bond dissociation enthalpies (in KJ/mol) for C-?H: 413, O-?H: 463, C-?O: 358, C-?C: 154, C=O: 122, and O=O: 498

What is the work done by gravity on the crate : A man lifts a 13 kg crate directly upwards from the floor to a shelf (6 m high) at constant speed*. What is the work done by gravity on the crate

Explain what ions will you find in solution : What ions will you find in solution. You want to separate the calcium from iron by addition of Na3PO4. The Ksp for Ca3(PO4)2 (s) is 1.3x10-32 and that for FePO4(s) is 1.0 x 10-22. Identify the precipitate that forms first. Is the separation succes..

How much work does the child do on the wagon : A child pulls a friend in a little red wagon with constant speed. If the child pulls with a force of 16 N for 10.0 m, how much work does the child do on the wagon

What must be the speed of the capsule : To test the effects of high acceleration on the human body, NASA has constructed a large centrifuge at the Manned Spacecraft Center in Houston. what must be the speed of the capsule

Evaluate the mass percent and the mole fraction : If the mixture is ignited and the methane completely combusts, producing carbon dioxide (CO2) and water (H2O), calculate the mass percent, the mole fraction, and the partial pressure of CO2 in the container after cooling back down to the initial t..

User Account

All Pages