Ask Question
30 July, 04:21

A 2 kg block is on a horizontal surface. A horizontal force is applied by a person to the block to pull it on the surface with an acceleration of 2 m/s. The coefficient of kinetic friction between the box and the surface is 0.3. How much work is done in joules by the person on the block if the block is pulled 50 m? a) 200 joules b) 250 joules c) O joules d) 300 joules e) 500 joules

+5
Answers (1)
  1. 30 July, 04:36
    0
    work done = 500 J

    option e is correct

    Explanation:

    given data

    mass = 2 kg

    acceleration = 2 m/s

    coefficient of kinetic friction = 0.3

    block D = 50 m

    to find out

    work

    solution

    we know that work done is

    work done = f * d ... 1

    here f is force and d is block i. e 50 m

    so here

    force, f - k mg = ma

    f = 2 (2 + 0.3 * 10)

    f = 10 N

    so from equation 1

    work done = f * d

    work done = 10 * 50

    work done = 500 J

    option e is correct
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A 2 kg block is on a horizontal surface. A horizontal force is applied by a person to the block to pull it on the surface with an ...” in 📗 Physics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers