Recent content by patelkey

Homework Statement a climber with a weight of 734.2 N is held by a belay rope connected to her climbing harness and belay device; the force of the rope on her has a line of action through her center of mass. The indicated angles are θ = 36.5° and ϕ = 29.0°. If her feet are on the verge of...

Wow your right I also converted units wrong this problem was really annoying, thanks for the help!

No I actually got that answer through a different method, however, the correct answer is 417 m.

The airplane shown is in level flight at an altitude of 0.50 km and a speed of 150 km/h. At what distance d should it release a heavy bomb to hit the target X? -I tried using x-x0=(v0)(cos(theta))t; and then solving for t with another equation but that does not give me the correct answer...

okk that's what I was thinking but I felt as if it was just a guess that happened to work out thanks for the explanation

A 5.0 kg mass is suspended by a string from the ceiling of an elevator that is moving upward with a speed which is decreasing at a constant rate of 2.0 m/s in each second. What is the tension in the string supporting the mass? -I know that the Normal Force on the string is Fn=mg so it...

Wouldn't F=(d/dt) (mv) just equal F=ma

Homework Statement Two long barges are moving in the same direction in still water, one with a speed of 25 km/h and the other with a speed of 50 km/h. While they are passing each other, coal is shoveled from the slower to the faster one at a rate of 900 kg/min. How much additional force must...

I got it It turned out I was entering -0.28 cm but I forgot to convert it so it was actually -28 cm thanks for the help

After using the equation you gave me I got v2f=3m/s and v1f=-2m/s but what do I do with these two quantities to figure out the point of collision?

Homework Statement Particle 1 of mass m1 = 0.30 kg slides rightward along an x-axis on a frictionless floor with a speed of 2.0 m/s. When it reaches x = 0, it undergoes a one-dimensional elastic collision with stationary particle 2 of mass m2 = 0.40 kg. When particle 2 then reaches a wall...

ohhh okk i got it I had to use W=1/2kx^2 they gave k and i figured out W through the KE equation. it was 0.33 m if you were curious.

Homework Statement In the figure below, block 2 (mass 1.4 kg) is at rest on a frictionless surface and touching the end of an unstretched spring of spring constant 170 N/m. The other end of the spring is fixed to a wall. Block 1 (mass 2.0 kg), traveling at speed v1 = 4.0 m/s, collides with...

Homework Statement A bullet of mass 6 g strikes a ballistic pendulum of mass 2.0 kg. The center of mass of the pendulum rises a vertical distance of 14 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed. Homework Equations KE=1/2(mv^2)...

Homework Statement A paratrooper fell 375 m from an airplane without being able to open his chute. Assume that his speed at impact was 52 m/s (terminal speed), that his mass (including gear) was 85 kg, and that the force on him from the snow was at the survivable limit of 1.2 multiplied by...