An archer pulls her bowstring back 0.400 m by exerting a force that increases linearly from...
47. An archer pulls the bowstring back for a distance of 0.470 m before releasing the arrow. The bow and string act like a spring whose spring constant is 425 N/m. (a) What is the elastic potential energy of the drawn bow? (b) The arrow has a mass of 0.0300 kg. How fast is it traveling when it leaves the bow?
When an archer pulls an arrow back in his bow, he is storing potential energy in the stretched bow. (a) Compute the potential energy stored in the bow, if the arrow of mass 5.05 10-2 kg leaves the bow with a speed of 32.0 m/s. Assume that mechanical energy is conserved. (b) What average force must the archer exert in stretching the bow if he pulls the string back a distance of 30.0 cm?
. Emily pulls a wagon for 15.0 meters along level ground by exerting a force of 215 N at an angle of 30° with the ground. How much work does she do?
An airline passenger pulls a wheeled suitcase, exerting a force of 60N, at a 35 degrees angle with the horizontal. How much work does she do on the suitcase in pulling it 45m from a ti to the checkout counter?
To keep her dog from running away while she talks to a friend, Susan pulls gently on the dog's leash with a constant force given by F⃗ = (2.0 N )x^ + (1.5 N )y^. (A) How much work does she do on the dog if its displacement is d⃗ = (0.21 m )x^, (B) How much work does she do on the dog if its displacement is d⃗ = (0.18 m )y^, (C) How much work does she do on the dog...
1) An archer fires an arrow from a bow. The arrow’s mass is 0.088 kg, and an average force of 110 N is exerted by the bowstring over a 0.78 m distance. Calculate the velocity of the arrow just after it is released by the bowstring by two methods: a) Calculate the arrow’s acceleration that is caused by the bowstring, and use kinematic equations to calculate the velocity at the end of the acceleration. Assume a constant acceleration that corresponds...
The net force exerted on a particle acts in the +x direction. Its magnitude increases linearly from zero at x = 0, to 22.0 N at x = 3.5 m . It remains constant at 22.0 N from x = 3.5 m to x = 8.0 m , and then decreases linearly to zero at x = 13.0 m . A) Determine the work done to move the particle from x = 0 to x = 13.0 m graphically by...
Diego pulls a 4.5 kg sled across level snow with a force, F, of 230 N on a rope that is 35.0° above the horizontal. If the sled moves a distance of 65.5 m, how much work does Diego do? what formula do i use?
A man pulls a 10-kg sled 66 meters along an angled hill with a force of 53 N, which elevates the man 28 meters above the bottom of the hill. The man then hops on his sled and slides from rest to the bottom of the hill back along his 66 meter path, during which a 102 N frictional force acts upon his sled. How much work in Joules does the man do on the sled in pulling the sled...
A girl pulls her 18 kg wagon along a fiat sidewalk by applying a 20 N force at 41° to the horizontal. Assume that friction is negligible and that the wagon starts from rest. (a) How much work (in ) does the girl do on the wagon in the first 1.95? (b) How much instantaneous power in W) does she exert att - 1.95? w