How much work does the force F(x)=(-2.0/x) N do on a particle as it moves from x=20m to x=5.0m
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Q: the work done on the particle
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- A bicyclist starting from rest applies a force of F = 239 N to ride his bicycle across flat ground for a distance of d = 210 m before encountering a hill making an angle of θ = 17 degrees with respect to the horizontal. The bicycle and rider have a mass of m = 120 kg combined. In this problem, you can ignore air resistance and other losses due to friction.How much work, W in joules, did the rider do before reaching the hill? What is the bicycle's speed, v in m/s, just before the hill? If the cyclist starts coasting at the bottom of the hill, what distance, di in meters, does the bike travel up the incline?Ex(N) 80 50 25 X(m) 10 25 40 50 58 1) Work by a force, drawn on a graph, determine: a) The total work done by the force. b) Work at (10sx<40) m?On a horizontal surface, an object slides from point P to point Q along a straight line, then slides back from Q to P along a semicircle. If P and Q are a distance L apart, how much work did the force of kinetic friction do during the entire process? The magnitude of fk is fk.
- An object is subjected to a friction force with magnitude 4.65 N, which acts against the object's velocity. What is the work (in J) needed to move the object at constant speed for the following routes? y (m) В (5.00, 5.00) x (m) A (a) the purple path O to A followed by a return purple path to O (b) the purple path O to C followed by a retum blue path to O (c) the blue path O to C followed by a return blue path to OAn object is subjected to a friction force with magnitude 6.60 N, which acts against the object's velocity. What is the work (in J) needed to move the object at constant speed for the following routes? у (m) В (5.00, 5.00) x (m) A (a) the purple path O to A followed by a return purple path to O (b) the purple path O to C followed by a return blue path to O the blue path O to C followed by a return blue path to O (d) Each of your three answers should be nonzero. What is the significance of this observation? O The force of friction is a conservative force. O The force of friction is a nonconservative force.The graph in the figure below shows the magnitude of the force ex- erted by a given spring as a function of the distance x the spring is stretched. How much work is needed to stretch this spring: (a) a distance of 5.0 cm, starting with it unstretched, and (b) from x - 2.0 cm to x = 7.0 cm? F (N) x (cm) 1 2 3 4 5 6 67 8 350 300 250 200 150 100 50