physics. please help

A worker pushes a 820 N crate with a horizontal force of 345 N a distance of 24 m. Assume the coefficient of kinetic frictin between the crate and the floor is 0.22.

a) How much work is done by the worker on the crate?
b) How much work is done by the floor?
c) What is the net work done on the crate?

  1. 👍 0
  2. 👎 0
  3. 👁 149
asked by Alecia
  1. a) 345 N*24 m = ___ J
    b) -820 N*(0.22)*24 m = - ___ J
    c) Add the previous two results.
    (Note that (b) is negative)

    1. 👍 0
    2. 👎 0
    posted by drwls

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics- Work

    A worker pushes a 1.50*10^3 N crate with a horizontal force of 345 N a distance of 24.0 m. Assume the coefficient of kinetic friction between the crate and the floor is 0.220. a. How much work is done by the worker on the crate?

    asked by Pablo on October 27, 2010
  2. Physics

    A factory worker pushes a 29.2kg crate a distance of 4.1m along a level floor at constant velocity by pushing downward at an angle of 28 degrees below the horizontal. The coefficient of kinetic friction between the crate and floor

    asked by Garrett on March 17, 2014
  3. Physics

    A worker pushes a 1500 N crate with a horizontal force of 345 N a distance of 24 m. Assume the coefficient of kinetic friction between the crate and the floor is .220. How much work is done by the floor on the crate? -M*g*(mu,k)*X

    asked by Mischa on February 27, 2007
  4. Physics

    A factory worker pushes a 32.0 kg crate a distance of 4.9 m along a level floor at constant velocity by pushing downward at an angle of 32 ∘ below the horizontal. The coefficient of kinetic friction between the crate and floor

    asked by octavio on October 11, 2015
  5. physics

    a worker pushes a 1420 N crate with a horizontal force of 420 N a distance of 27m. assume the coefficient between the crate and the floor is 0.22. what is the net force done on the crate?

    asked by Anonymous on December 16, 2013
  6. Physics

    Question # 1 Marks = 12 A worker pushes 25Kg crate a distance of 5m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic frication between the crate and the floor is 0.23. (a) What

    asked by M. Yousaf Khan on November 1, 2011
  7. Physics

    A worker pushes 25Kg crate a distance of 5m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic frication between the crate and the floor is 0.23. (a) What magnitude of force must the

    asked by Abdul Waheed on November 2, 2011
  8. PHYSICS

    A factory worker pushes a 30.7 crate a distance of 4.0 along a level floor at constant velocity by pushing downward at an angle of 31 below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.26.

    asked by HANNE on October 11, 2012
  9. Physics

    Two workers are sliding 310kg crate across the floor. One worker pushes forward on the crate with a force of 440N while the other pulls in the same direction with a force of 230N using a rope connected to the crate. Both forces

    asked by omar on November 21, 2014
  10. physics

    Two workers are sliding 330 kg crate across the floor. One worker pushes forward on the crate with a force of 410 N while the other pulls in the same direction with a force of 240 N using a rope connected to the crate. Both forces

    asked by yahya on November 6, 2015

More Similar Questions