Recent content by anteaters

Homework Statement A 1040 kg car is pulling a 300 kg trailer. Together the car and trailer move forward with an acceleration of 2.11 m/s2. Ignore any frictional force of air drag on the car and all frictional forces on the trailer. What is the resultant force exerted by the car on the road...

okay i did all that, and for the Fx, i still got the wrong answer. i got 23.76, but the program I'm using said i was within 10% of the answer. for the Fy, however, it said i was off by orders of magnitude. Here is what i did, maybe you can show me where i went wrong: Yf = m(-g)t2 + s then...

Homework Statement Besides its weight, a 4.20 kg object is subjected to one other constant force. The object starts from rest and in 1.20 s experiences a displacement of (3.80i hat - 3.30j hat) m, where the direction of j hat is the upward vertical direction. Determine the other force...

nevermind, i figured it out. it was sin 28. thanks for your time alphysicist.

okay i was looking through my book and realized what to do. i was just plugging and chugging with numbers instead of looking at teh problem and actually solving it. so for T1 i needed to realize that m(a) = 0 because the acceleration of the system = 0. so the only other force in the y...

Homework Statement Figure P4.24 shows loads hanging from the ceiling of an elevator that is moving at constant velocity. Find the tension in each of the three strands of cord supporting each load, given that θ1 = 40°, θ2 = 50°, θ3 = 62°, m1 = 3 kg, and m2 = 6 kg. Homework Equations...

Homework Statement Three blocks are in contact with one another on a frictionless, horizontal surface as shown in Figure P4.43. A horizontal force vector F is applied to m1. Taking m1 = 2.00 kg, m2 = 3.00 kg, m3 = 5.00 kg, and F = 16.0 N, draw a separate free-body diagram for each block. (Do...

thanks a lot D H.

25.4 hours = 91440 seconds = 2(pi)(7.31 x 10^6)/v so v = 502.3 m/s a_r = [(502.3 m/s)^2]/(7.31 x 10^6) = 0.0345 m/s^2 would that be the right answer? it seems kind of small.

oh, and my answer was 2.88 x 10^8 m/s2

Homework Statement Consider a planet of radius 7.31 x 10^6 m with a rotation period of 25.4 hours. Compute the radial acceleration of a point on the surface of the planet at the equator owing to its rotation about its axis. Homework Equations T = [2(pi)r]/v a_r = -[(v^2)/r] The...