Recent content by Alyona

Yes, I agree it needs to be reworded. Thanks for your help!

You gradually apply a force to a 10. kg wood block on a wood table. What will the applied force on the block be once it is moving? The coefficients of static and kinetic friction are 0.5 and 0.3 respectively. The acceleration due to gravity is 9.8 m/s2. Selected Answer: d. 49. N Answers: a...

I think I get it now. First the wood block has to overcome the static friction force to start moving and then it has to overcome the kinetic friction force to keep moving.

Homework Statement You gradually apply a force to a 10. kg wood block on a wood table. What will the applied force on the block be once it is moving? The coefficients of static and kinetic friction are 0.5 and 0.3, respectively. The acceleration due to gravity is 9.8 m/s2. Homework Equations...

Ohh, I get it now, thank you for your help!

Yes, it's confusing. If you don't need the force of friction to solve the problem, since the net force was given, why put it in the problem then? I think the first solution is correct, but I'm not sure.

Homework Statement A person is pushing a box. The net external force on the 60 kg box is stated to be 90 N. If the force of friction opposing the motion is 30 N, what is the acceleration of the box? Homework Equations This seems to be a pretty easy, straightforward problem, but I'm confused...