RoboticNaruto4693 RoboticNaruto4693

03-01-2018
Physics

contestada

How much work is done when a hoist lifts a 290-kg rock to a height of 7 m?

Respuesta :

samuraijack samuraijack

03-01-2018

Given: Mass m = 290 Kg; Height h = 7 m

Required: Work = ?

Formula: Work = Force x distance but, Force F = mg

W= fd

W = mgh

W= (290 Kg)(9.8 m/s²)(7 m)

W = 19,894 Kg.m²/s²

W = 19,894 J

Answer Link

Otras preguntas

What voltage is needed to push 3 amps of current through a 1500-watt hair dryer ??

Don bought his car for $20,350. It is expected to depreciate an average of 11% each year during the first 5 years. What will the approximate value of his car be

When a user highlights text or an object and holds the mouse cursor over it, the toolbar will appear to provide formatting options.?

A wheel has a radius of 12 cm., approximately how far does it travel in 2 revolutions? A:47.1 cm B:150.72 cm C:188.4 cm D:376.8 cm

A cylinder has a height of 6 meters and a diameter that is 6 times the measure of the height. Using 3.14 for pi, which of the following can be used to calculat

Event A has a 0.3 probability of occurring and event B has a 0.4 probability of occurring. A and B are independent events. What is the probability that either A

How many men walked on the moon during the apollo mission?

60 mL converted to 1000 k

Dan runs 3 miles in 28 minutes. At the same rate, how many miles would he run in 42 minutes?

Who was Hanfeizi? pleace help me