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 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

how many cities to determine the epicenter of an earthquake
Which statements would best represent a model Newton's Law of action-reaction? A. toy car rolling down a ramp B. toy rocket down a ramp C. toy boat floati
for some reason i cant find the answer to save my life plz help
can anyone help me find the answers please !!
Do you think it is important to learn how to give CPR?
Scientists claim that climate change is happening because Earth is warming. They also claim that humans have helped cause the warming by adding greenhouse gases
what is the order of the “ ladder of laws?”
Approximately 6.5x10^7 people fly commercially in the United States each month. Approximately how many fly commercially each year?
1)Solve the system of equations using substitution or elimination. Your 12x - y = 24 -3x + 2y = -6
Which of the following is the best title for this passage?