Question

in which of the following a force f is acting on an object mass m the direction of displacement is from west to east zone by the longer Arrow observer the diagram carefully and state whether the work done by a force is negative or zero​

Answer 1

Answer:

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Answer 2

Answer:

Workdone W=

F

.

S

=FS cosθ where θ is the angle between

F

and

S

For (a) : θ=90

o

∴ W=FS cos90

o

=0

For (b) : θ=0

o

∴ W=FS cos0

o

=FS>0

For (c) : θ=180

o

∴ W=FS cos180

o

=−FS<0

Explanation:

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