Asked by ally
i have noo idea how to do this, please hellppppp
A 15.6 kg block is dragged over a rough, hor-
izontal surface by a constant force of 72.2 N
acting at an angle of angle 34.8 above the
horizontal. The block is displaced 24.6 m and
the coefficient of kinetic friction is 0.234.
Find the work done by the 72.2 N force.
The acceleration of gravity is 9.8 m/s2 .
Answer in units of J.
A 15.6 kg block is dragged over a rough, hor-
izontal surface by a constant force of 72.2 N
acting at an angle of angle 34.8 above the
horizontal. The block is displaced 24.6 m and
the coefficient of kinetic friction is 0.234.
Find the work done by the 72.2 N force.
The acceleration of gravity is 9.8 m/s2 .
Answer in units of J.
Answers
Answered by
drwls
72.2 cos34.8* 24.6 m = ___ J
That is the work done no matter what the friction force is.
Friction determines how much of that work goes into heat and how much goes into kinetic energy.
That is the work done no matter what the friction force is.
Friction determines how much of that work goes into heat and how much goes into kinetic energy.
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