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A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is ?s = 0.571, and the kinetic friction coefficient is ?k = 0.467. The combined mass of the sled and its load is m = 321 kg. The ropes are separated by an angle ? = 28°, and they make an angle ? = 29.7° with the horizontal. Assuming both ropes pull equally hard, what is the minimum rope tension required to get the sled moving? If this rope tension is maintained after the sled starts moving, what is the sled\'s acceleration?
A sinusoidal force with an amplitude of 1.70 N drives the system. At what frequency will the force make the object vibrate with an amplitude of 0.440 m
A player kicks a ball from ground level with an initial velocity of 27.00 m/s at 30 degrees above the horizontal. What is the ball's range to one decimal place
A coin with a diameter of 3 cm is dropped onto a horizontal surface. The coin starts out with an initial angular speed of 27.8 rad/s, How far does the coin roll before coming to rest
An 1590 kg car stopped at a traffic light is struck from the rear by a 873 kg car and the two become entangled. what is the speed of the entangled mass after the collision
1. a ship has a top speed of 3.0 ms in calm water. the current of the ocean tends to push the boat at 2.0 ms on a
A rectangle with a length L, and width L/2 has a surface charge density of 3.1mC/m^2. Determine the integral that would give you the electric field at a height h above the middle of the long edge.
A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 415 N walk on the overhanging part of the plank before it just ..
question1a 50-kg student on a sled starts from rest at a vertical height of 20 m above horizontal base of a hill and
A pet-store supply truck moves at 25m/s north along a highway. Inside, a dog moves at 1.85m/s at an angle of 35° east of north. What is the velocity of the dog relative to road.
What's the magnitude of the electric field at an on-axis point a distance of .7m from a ring of charge with a total charge of .8microC
If an automobile rounds this curve at 30 {rm m/s}, illustrate what is the minimum coefficient of static friction between tires and road needed to prevent skidding?
A 23.0-N block rests on a horizontal surface. The coefficients of static and kinetic friction between the surface, What is the force of friction acting on the block if T = 20.56 N
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