for question #1, what do u mean by done. Am i done with the problem or am i done with referencing g's in the question? If not, what is the next step?
for question #2, could you elaborate? My knowledge on collisions is iffy at best. What formulas are you talking of for velocity?
New Title: Friction problem
Is the normal force the mass of the box*gravity so 20kg(9.8m/s^2)=196N?
and if so, is that the force perpendicular to the ramp in the diagram?
I was initially going to put a different problem but I forgot to change the title!
The diagram angle was a mistake, It was 45deg. Not 40deg.
Is the normal force 200N? or am I mistaken in the way that I'm labeling variables and calculating them?
https://gyazo.com/373eea5a0624f1562ed194fd5074fd02
https://gyazo.com/373eea5a0624f1562ed194fd5074fd02
Is the normal force not 200N? or am I supposed to factor in the mass of 20kg?
Homework Statement
A car braking will decelerate at .8g. If the car's mass is 1200kg, how much horizontal force does each tire exert on the road? What is the coefficient of friction between the tire and the road?
A 2kg steel ball rolling at 4m/s strikes a stationary 5kg steel ball elastically...
Homework Statement
A 20kg box has a static coefficient of friction of 0.28. If a force of 200N is applied at an angle of 45deg, is the box able to move. Explain why once the static friction is overcome, the frictional force decreases and the box moves easier.
Homework Equations
F=m*a
Ff=μFN...