Recent content by physicsgurl12

the whole problem reads this. two 10 kilogram boxes are connected by a massless string that passes ocer a massless frictionless pulley as shown above( this would be the picture on the other problem) The boxes remaine at rest, with one on the right hanging vertically and the one on the left...

well there isn't an angle?

the tension was part a. this is part b. the force diagram would be the same as the other but without the force of the rope.

heres my force diagram.

if i remember to!

Homework Statement determine the magnitude of the frictional force acting on the box on the plane Homework Equations f=ma The Attempt at a Solution no clue. help ??

it says " the coefficients of kinetic friction and static friction between the left hand box and the plane are .15 and .30"

um because its touching the surface

wait no there's surface

i think the forces are gravity, tension and frictional.

Homework Statement What is the tension T in the string? Homework Equations Is their an equation for tension. not in my book? The Attempt at a Solution im soo lost.

Homework Statement A car needs to generate 75 hp in order to maintain a constant velocity of 27.3m/s on a flat road. What is the magnitude of the total resistive force acting on the car. (due to friction,air resistance etc.) Homework Equations 1hp=746 watts The Attempt at a Solution...

Homework Statement a 480kg car moving at 14.4m/s hits a another car from behind moving at 13.4m/s in the same direction. if the second car has a mass of 570kg and a new speed of 17.9m/s what is the velocity of the first car after the collision?? Homework Equations m1*v1=m2*v2 doubt...

sorry 800 haha. those number represent the force? It means the fat kid would go down?

900 =600