300 FIS) 101b Ms 0 15 MK=0.1 Find work done by friction (ft-lb) after the block is pushed 6ft 6ft F 501b1 ✓ ellipse 6ft S <>
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- 1] A 20kg mass hangs at rest at end of a pendulum rope. Assume that you push it up at 0.6m above initial level and keep it there. Identify forces on the mass, use work- energy theorem in 3D and find: a) How much work do you spend for this operation... If it takes 0.6 sec to bring it from "A" to "B",... b) What average power you have exerted... c) How much work do you spend for this operation... If you keep it at rest at "B" for 2 minutes, Then, you leave free. •.. d) What is its speed when it arrives at A?... B 0.6m A16) A force F of strength 20N acts on an object of mass? kg as it moves a Distance of 4 meters. If F is perpendicular to the 4m displacement, the work the force does is; a) 0 b) 80 q esc S it ZX c) -80 764 d) can't be determined DII 03 0 # BA2° 3* 5² 6^7& 7 8 9¹0¹E tabQW R LOP US D Nov 16 DFGHJKL BNM C2answer is correct, need to see work please
- 6. A person pushes a shovel into the ground to do some spring gardening. He applies force to the shovel over the following displacement. Force (N) Distance (cm) 0.0 0.0 4.0 2.0 8.0 4.0 12.0 6.0 (a) Draw a graph to represent the situation. | (b) Calculate the work donc by the man on the shovel over the 6.0 cm.'1. A 40KG box initially at rest is pushed for 5.0m along a rough horizontal floor by a constant horizontally applied force of 130 N. If the coefficient of frietion between the box and the floor is 0.30, find; a) the work done by the applied force, b) the energy lost due to friction, c) the change in kinetic energy of the box, d) the final speed of the box.8
- #11. The restoring force from a non-ideal spring can be described by F-250N/m A-800N/m³. (Az)³, where Az is measured from equilibrium. How much work is done compressing this spring by 10 cm?Determine the work that the 12N tension force does on this 5.0 kg object as it moves up the rough ramp (k = 0.88) a distance of 2.5 m. 0=16 constant FN FR 32° хлу
- 1. A 23.0 kg child is playing on a swing with a length of 2.5 m. If the swing starts from rest and makes an angle of 40.0◦ with the vertical at the top of the swing, a) determine the child’s speed at the bottom of the swing neglecting friction. b) If the swing has a speed of 2.8 m/s at the bottom, determine the work done by friction during the downswing and, bonus) assuming the force of friction is constant, determine the maximum angle the swing attains on the upswing after passing through the bottom. Hint: Use the approximation that cos θ ≈ 1 − 1 2 θ 2 for angles given in radians.#1