Recent content by reaperkid

Ughhh, I don't know how to get the normal force or friction force. If I could get either of those then it would be easy to balance them. And isn't friction the only negative force here? Nevermind I got it, thanks!

Soo does that mean the normal force is equal to the gravitational force?

Homework Statement A block of mass 19.0 kg is sliding down an inclined plane. Due to friction between the block and the plane the block is moving at constant speed. If the coefficient of kinetic friction is 0.24), what is the angle of the plane with respect to the horizontal ? m = 19kg...

Thank you very much! I got it now, I guess I should have searched harder for a good equation. My fault.

Homework Statement A disk accelerates with a constant angular acceleration of 2.0 rad/s2. If the initial angular velocity is 5.0 rad/s, what is the angular velocity of the disk after rotating though an angle of 11.0 radians? a = 2 rad/s^2 vo = 5 rad/s Theta = 11 rad Homework...

Hmm, I don't get it. Oh, well I just used my last guess. (It's online, we get 5 tries per question to get credit) Thanks for the responses though!

Oh, should I be using cosine then??

Homework Statement Alrighty, I have most of this set but I'm getting the wrong answer and I'm not sure why. A block of mass 18.0 kg is sliding down an 6.0 metre long ramp inclined at 56.0 deg. to the horizontal. If the coefficient of kinetic friction between the ramp and the block is 0.48...

Well, I wasn't too sure on C because I don't fully understand when the force stops acting on it I guess. My reasoning was because M1 would be in motion longer than M2. For E, I've been assuming that since it's getting pushed by the same spring that the force exerted on M1 and M2 are equal.

Homework Statement A spring of negligible mass is compressed between two masses (M1 is less massive than M2) on a frictionless table with sloping ramps at each end. The masses are released simultaneously. Select the appropriate symbol for each statement: G (Greater than), L (Less than), or E...

Homework Statement A 1676 g mass is on a horizontal surface with mu-k = 0.340, and is in contact with a massless spring with a force constant of 508 N/m which is compressed. When the spring is released, it does 9.17 J of work on the mass while returning to its equilibrium position...

I seee, it's positive because it's in the direction of gravity. Thank you very much sir! :)

That doesn't incorporate the initial velocity though does it? Wouldn't xi = 1.94 m ? xf = 0 m ?

Homework Statement A 0.179 kg ball is thrown straight up from 1.94 m above the ground. Its initial vertical speed is 10.00 m/s. A short time later, it hits the ground. Calculate the total work done by the force of gravity during that time. m = .179 kg vi = 10m/s (upward) g = 9.8 m/s2 d =...