Calculate the work done by a 47 N force pushing a 0.025 kg pencil 0.25 m against a force of 23 N?

1 Answer
A08
May 20, 2018

I think the question is ambiguous and not correctly worded.

Explanation:

Total force applied #=47\ N#

Assuming that direction of movement of pencil and applied force is same.
Work done by force in moving the pencil

#W="Force"xx"Distance through which force moves"#
#=>W=47xx0.25=11.75\ J#

.-.-.-.-.-.-.-.-.

In case we are asked useful work done then we calculate net force used for pushing the pencil:

Net force used for pushing the pencil #=47-23=24\ N#
Assuming that direction of movement of pencil and net force is same.
Useful Work done by force in moving the pencil

#W_u="Force"xx"Distance"#
#=>W_u=24xx0.25=6\ J#

Related questions
Impact of this question
38906 views around the world
You can reuse this answer
Creative Commons License