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You are designing a delivery ramp for crates containing exercise equipment. The crates of weight 1470N will move with speed 2.2m/s at the top of a ramp that slopes downward at an angle 25.0degrees. The ramp will exert a 621N force of kinetic friction on each crate, and the maximum force of static friction also has this value. At the bottom of the ramp, each crate will come to rest after compressing a spring a distance x. Each crate will move a total distance of 8.0m along the ramp; this distance includes x. Once stopped, a crate must not rebound back up the ramp. Calculate the maximum force constant of the spring k_max that can be used in order to meet the design criteria.
A 4.4-m-diameter merry-go-round is initially turning with a 4.5s period. It slows down and stops in 16s. what is the speed of a child on the rim
In Larry Niven's science-fiction novel Ringworld, a rigid ring of material rotates about a star. The inhabitants of this ring world live on the starlit inner surface of the ring, What is the length of a year on this planet
List out five to ten specific things that project managers can do to help manage stakeholders. Provide some examples of successful and unsuccessful relationships with project stakeholders.
An archer pulls her bowstring back 0.388 m by exerting a force that increases uniformly from zero to 229 N. What is the equivalent spring constant of the bow
Find out the maximum height that the rocket reaches (neglecting air resistance) when the fuel is exhausted.
The plane of a 5.60cm by 8.40cm rectangular loop of wire is parallel to a 0.220T magnetic field, and the loop carries a current of 6.45A . What torque acts on the loop?
If a container has a water level 20 cm above the base and you punch a hole in the side 12 cm high
How does the decrease in gravitational potential energy of a falling ball compare to its increase in kinetic energy.
Calculate the critical angle of incidence for total internal reflection in glass with a refractive index of 1.50 (Assume that the second medium is a vacuum).
The arm of a crane at a construction site is 14.4 m long, and it makes an angle of 40° with the horizontal. Assume that the upmost load the crane can handle is limited by the amount of torque the load produces at the base of the arm.
A man standing on the ground throws a pebble with an initial veloctiy of 14m/s at an angle of 70 degrees above the horizontal, How high above the ground is the window
A 111g Frisbee is 25cm in diameter and has half its mass spread uniformly in the disk and the other half concentrated in the rim. What is the Frisbee's rotational inertia
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