physics

A boy of mass 50kg runs up a set of stairs of total height of 3.0m.find the work done against gravity

  1. 👍 0
  2. 👎 0
  3. 👁 811
  1. Answer of the question

    1. 👍 1
    2. 👎 0
  2. Work done= force x displacement.
    W = f x s
    W = (50 x 10) x 3
    W = 1500J

    1. 👍 1
    2. 👎 1

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A new record for running the stairs of the Empire State Building was set on February 3, 2003. The 86 flights, with a total of 1576 steps, was run in 9 minutes and 33 seconds. If the height gain of each step was 0.20 m, and the

  2. Physics

    A boy starts at rest and slides down a frictionless slide as in the figure below. The bottom of the track is a height h above the ground. The boy then leaves the track horizontally, striking the ground a distance d as shown. Using

  3. Physics

    A girl whose weight is 30 N runs up a flight of stairs 5 m in 6 s. What is her average power

  4. math

    Ariana runs up 4 flights of stairs and then runs down 4 flights of stairs. Does this situation represent additive inverses? Explain.

  1. PHYSICS

    A) The average power output of the human heart is 1.33 watts. How much energy does the heart produce in a day? B) Compare the energy found in part (a) with the energy required to walk up a flight of stairs. Estimate the height a

  2. Physics

    A woman runs up a flight of stairs. The gain in her gravitational potential energy is 6500 J. If she runs up the stairs at half the speed, what is her gain in gravitational potential energy?

  3. physics

    a boy weighing 350N runs up a flight of stairs consisting of 20 steps each 10cm high in 10 seconds. What is his power? show your workings

  4. physics

    A woman with a mass of 65kg climbs a set of stairs that are 3m high. How much gravitational potential energy does she gain? Thank you.

  1. Physics

    A boy whose mass is 40kg runs up a flight of 30 steps each 150mm high in 6seconds. Find the average power developed (take g as 10m/s^2.

  2. physics

    a boy runs 100m along the east,then he turns to his left side at right angle and runs for 50m along the north direction.find the distance and the magnitude of the displacement .

  3. engineering

    a boy of mass 40kg is sliding down the spiral slide at a constant speed such that his position is measured by theta=(0.7t) rad and z=(-0.5t) m where t is in seconds. How do you find the components of forces Fr, Ftheta and Fz which

  4. physics

    A 680 newton student runs up a flight of stairs 3.5 m high in 11.4 seconds. The student takese 8.5 seconds to run up the same flight of stairs during a second trial. 1)Find the work done by the 680 N student in climbing the stairs

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