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
May 20, 2018
I think the question is ambiguous and not correctly worded.
Explanation:
Total force applied
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
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#