physcial science

a 50 kg crate is lifted to a height of 10 meters.

a. how much potential energy does the crate have after being lifted?

b. if it took 5 seconds to lift the crate, using a machine what was the power rating of the machine?

  1. 👍 0
  2. 👎 0
  3. 👁 145
asked by jake
  1. a) Work = Force x Distance

    The Force in this case is Mass*(acceleration of gravity), so
    Work = 50 kg*9.8 m/s^2*10 m = __ Newtons

    b) Power = Work/Time

    1. 👍 0
    2. 👎 0
    posted by drwls
  2. one half second after starting from rest, a free falling oblect will have a speed of about what?

    1. 👍 0
    2. 👎 0
  3. homogeneous mixture

    1. 👍 0
    2. 👎 0
    posted by tyler

Respond to this Question

First Name

Your Response

Similar Questions

  1. physical science

    a 50kg crate is lifted to a height of 10 meters. how much potential energy does the crate have after being lifted?

    asked by Rosemary on September 22, 2008
  2. physical science

    A 50 kg crate is lifted to a height of 10 meters.How much potential energy does the crate have begin lifted?

    asked by me on September 7, 2010
  3. science

    a 50kg crate is lifted to a height of 10 meters how much potential energy does the crate have after being lifted?

    asked by n on June 18, 2010
  4. Physics

    A crate of a mass 150 kg is lifted onto a truck 2.5 m above the ground. How much potential energy has the crate gained?

    asked by Mark on February 2, 2011
  5. Physical Science

    an initially stationary 15.0 kg crate of cheese wheels is pulled via a cable a distance d = 5.70 m up a frictionless ramp to a height of h = 2.5 m, where it stops. What is its potential energy of the crate after it is lifted? how

    asked by junior on June 24, 2011
  6. physics

    An initially stationary 15.0-kg crate of cheese wheels is pulled via a cable a distance d= 5.70m up a frictionless ramp to a height of h= 2.50m, where it stops. What is the potential energy of the crate after it is lifted? How

    asked by rosie on June 30, 2011
  7. Physical Science

    Two objects were lifted by a machine. One object had a mas of 2 kilograms, and was lifted at a speed of 2 m/sec. The other had a mass of 4 kilogram was lifted at a rate of 3 m/sec. ------------------------------------------- a)

    asked by Jinja on September 26, 2017
  8. physics

    a 400 kg crate is to be lifted a height of 20 m in 30 s. Compute the work done and the power consumed in lifting the crate

    asked by joan on January 24, 2012
  9. university physics

    A cable is used to lift a 310. kg crate upward, resulting in 7.82×103 N of tension in the rope. Using work and energy, solve for the speed of the crate after being lifted from rest to a height of 1.40 m above the floor.

    asked by Anonymous on November 11, 2018
  10. Physics

    A man uses a pulley arrangement to lift a heavy crate.He applies a force that is one-fourth the weight of the crate, but moves the rope a distance four times the height that the create is lifted. Is the work done by the man

    asked by Adriana on November 14, 2010

More Similar Questions