Physics

A system of pulleys is used to lift a load of 1000kg.if the efficiency of pulley system is 80%and velocity ratio is 20,find effort required to lift the load...............??

  1. 👍 0
  2. 👎 0
  3. 👁 526
  1. 1000*9.81 /(20*0.80) Newtons

    1. 👍 0
    2. 👎 1

Respond to this Question

First Name

Your Response

Similar Questions

  1. mabathoana high school maseru

    A block and tackle system of 5 pulley is used to raise a load of 500N steady through a height of 20m the work done against friction is then 2000J. Calculate the work done By effort, efficiency and effort applied

  2. Science

    To lift a load to the roof, you apply 21 N of force to a pulley. The pulley applies 21 N of force to the load. What is the mechanical advantage of the pulley? A.0 B.1 C.40 D.21

  3. science

    1.Which car has the greatest efficiency?(1 point) a 900 kg car that travels 15 km per liter of fuel a 900 kg car that travels 20 km per liter of fuel a 1,200 kg car that travels 15 km per liter of fuel a 1,200 kg car that travels

  4. physics

    1. The efficiency of a squeaky pulley system is 73 percent. The pulleys are used to raise a mass to a certain height. What force is exerted on the machine if a rope is pulled 18.0 m in order to raise a 58 kg mass a height of 3.0

  1. Physics

    A pulley system has an efficiency of 87.5%. How much rope must be pulled if a force of 648N is needed to lift a 105 kg desk 2.46m?

  2. Science

    A machine has a velocity ratio of 6 and is 80% efficiency.What effort would be needed to lift a load of 300 with the help of this machine

  3. PHYSICS

    A MACHINE HAS A VELOCITY RATIO OF 5 HAS AN EFFICIENCY OF 40.WHAT EFFORT WOULD BE NEEDED TO LIFT A LOAD OF 100N?

  4. Science

    A pulley system having 5 pulleys is used to raise a 450N load. find the mechanical advatange and hence the effort if the efficiency is 75%

  1. Physics

    A block and tackle system of pulleys consisting of 5 pulleys is used to raise a load of 500 N through a height of 12m. If the total work done by the system is 7200 J. calculate the 1. Work done against friction 2. Efficiency of

  2. Physics

    A pulley system has a velocity ratio of 4 and an efficiency of 80%.calculate the value of the effort required to raise the load of 480N

  3. physics

    Consider an ideal pulley system. Pull one end of a rope downward by 1 meter with 50 N of force, and you'll lift a 200-N load a distance of ____________________. A) 1 meter. B) 0.5 meter. C) 0.25 meter. D) None of these.

  4. Science

    A machine uses an effort of 5N to lift a load of 14N.Calculate it's velocity ratio,if it has an efficiency of 65%.

You can view more similar questions or ask a new question.