Recent content by rokas

Thanks. I understand now.

TagutoAza, I'm really sorry that I don't comprehend as fast as you wish. I try :/. I really want to learn. So would I use the 29.4N as F and mass of a box in m to find a in the formula, a=F/m? If so, then m1 = 29.4 m/s2 ; m2 = 14.7 m/s2 ; m3 = 9.8 m/s2

Wouldn't their acceleration be 9.81 then?

I see... I still have no idea how to set up an equation or find acceleration... I can find weight of m3 which is (3)(9.81) = 29.43. I can find normal forces of m1 and m2. But I'm clueless..

Homework Statement Find the acceleration of the masses based on the figure below. m1 = 1kg m2 = 2kg m3 = 3kg Homework Equations - The Attempt at a Solution I am completely lost, I've tried thinking and thinking over and over again about this problem, wouldn't the...

Okay, thanks Doc Al! Sorry, my teacher is pretty confusing sometimes.

The 68.783n is not the tension, its the force of the pull. Or is it the same thing? If it is the same thing, i have to add the force of friction to the x component of force since that's working against the movement?

I already know the normal force. I was trying to figure it out by myself and thought if i did this: Ty = 68.763sin(45) Tx = 68.763cos(45) + (127.957) (0.38) solve and combine x and y components to have the tension? not sure...at all.

I posted a post in precalculus section because i needed help solving an equation, but I'm stuck on finding tension. Could someone point me in the right direction on how to find tension for this problem? https://www.physicsforums.com/showthread.php?t=358699

Okay, so how do I find tension on the strap?

The question I have is should I add Force and Force of Friction since you have to overcome Force of Friction? But Force is on an angle, so does that mean i have to find Fx and then add them, and then combine Fx and Fy?

I solved the equation, F = 68.763N then i found normal force N = 127.957N I have to find the tension on the strap, but i don't completely understand how to do that. Could someone explain the concept or how to find it?

so Fcos(45) turns to .707107F?

Homework Statement At an airport, you pull a 18-kg suitcase across the floor with a strap that is at 45 degrees above the horizontal. Find the normal force and the tension on the strap, given that the suitcase moves with a constant speed and the coefficient of kinetic friction is 0.38...

Homework Statement The height of a helicopter is given by h=3.00t^3, where h is in meters and t in seconds. After 2s, the helicopter releases a small bag. How long does it take for the bag to reach the ground? Xi = 0 Xf = 24 (i got 24 meters when i plugged in seconds in h=3.00t^3) A(gravity)...