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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 = 0.419. The combined mass of the sled and its load is m = 336 kg. The ropes are separated by an angle ? = 26°, 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?
Two identical pellet guns are fired simultaneously from the edge of a cliff. These guns impart an initial speed of 24.1 m/s to each pellet. Gun A is fired straight upward, with the pellet going up and then falling back down, eventually hitting the..
On a frictionless surface, a 3-kilogram cart moves at a velocity of 2 meters per second west, What is this slower speed
How far downstream will you be carried. The water in a river flows uniformly at the constant speed of 2.03 m/s between parallel banks 87.7 m apart.
Once the station is completed, it is set rotating at a rate that requires an object at the rim to have radial acceleration, thereby simulating Earth's surface gravity. This is accomplished using two small rockets, each with 130 thrust that are mounte..
A device known as Atwood\'s machine consists of two masses hanging from the ends of a vertical rope that passes over a pulley, calculate the magnitude of their acceleration, a, and the tension in the rope, T
If she were to use the mattress as a trampoline losing contact with it for part of each cycle. What minimum amplitude of oscillation does she need.
A slide projector needs to create a 97 cm high image of a 2.0 cm tall slide, How far should you place the lens from the slide
Calculate the horizontal force that must be applied to a 1.00 kg puck to make it accelerate on a horizontal friction-free air table with same acceleration it would have if it were dropped and fell freely.
Four identical cells, each of emf 2V are joined in parallel providing supply of current to external circuit consisting of two 15 ohm resistors joined in parallel, Calculate the internal resistance of each cell
An electronics technician wishes to construct a parallel-plate capacitor using rutile (? = 1.00 102) as the dielectric. If the cross-sectional area of the plates is 1.00 cm2, what is the capacitance if the rutile thickness is 1.00 mm?
If the skier is moving at 13 m/s at the bottom of the trail, calculate the total work done by friction and air resistance during the run
During Charlie's golf drive, the angular velocity of his club is zero at the top of the backswing and 20 rad/s, What is the linear velocity of the club head just before impact with the ball
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