Recent content by onyxorca

y is 0 so .016*(.016*7.91)tan65+.032*x*tan37=0 ? .18/cos37=.225 for b?

Homework Statement The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.0160 kg and is moving along the x-axis with a velocity of +7.91 m/s. It makes a collision with puck B, which has a mass of 0.0320 kg and is initially at rest. The collision is not...

Correct! thank you!

Homework Statement A 64.9-kg skier coasts up a snow-covered hill that makes an angle of 23.4 ° with the horizontal. The initial speed of the skier is 8.95 m/s. After coasting a distance of 2.31 m up the slope, the speed of the skier is 4.40 m/s. (a) Find the work done by the kinetic frictional...

Fn=Fc-Fg Fn=mv^2/r-mg 300=mv^2/r-950 mv^2/r=300+950 v=sqrt((300+950)r/m) =15.2350 m/s ?

Homework Statement A special electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop at an amusement park. The sensor measures the magnitude of the normal force that the seat exerts on a rider. The loop-the-loop ride is in the vertical plane and...

well the numbers in the problem changes every time so i wouldn't know if this is right but i got the right answer for that time. in this case though it's probably F = 8.73E3 (1.6+.627304) = 19444.4 N because it's Fg-Fthrust, not the other way around.

V0=V^2+2ax find a F=mg-ma=m(g-a) i finally got it right, had trouble realizing that the thrust is smaller than gravitational force and i made mistakes when putting in the scientific digits but i finally got it.

well appearantly 8491 isn't right...

or was it u times normal force? 61.4*9.8cos30.9*.116=59.8925 N?

Fthrust - Fg = ma? so F - 8730*1.6 = 8730*-0.627304 F=8491.64 N?

F=ma the forces are gravity and thrust. btw the mass is 8.73 × 10^3 kg. the acceleration is 0=16.5^2+2a217 and a = -0.627304 m/s^2 ? where do i go from there?

Homework Statement A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 30.9 ° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 61.4 kg, and the coefficient of kinetic friction...

Homework Statement A 8.73 × 103-kg lunar landing craft is about to touch down on the surface of the moon, where the acceleration due to gravity is 1.60 m/s2. At an altitude of 217 m the craft's downward velocity is 16.5 m/s. To slow down the craft, a retrorocket is firing to provide an...

but that's the minus sign from the formula isn't it?