Ex77 : When the load applied to a suspended wire is increased from 3 kg. wt. to 5 kg wt. the elongation increases from 0.6 mm to 1 mm. How much work is done during this extension of wire ? (g = 9.8 m/s?) %3D
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- the potential energy of a particle is given by U(x)= (9 J/m^4)x^4-(8 J/m^2)x^2. At what value of x would the particle be in unstable equilibrium? A.) -2/3 m B.) sqrt of 8/9 m c.) 0 m d.) 2/3 m e.) sqrt of - 8/9 ma. Calculate the work done (in J) on a 1550 kg elevator car by its cable to lift it 39.5 m at constant speed, assuming friction averages 135 N. b. What is the work done (in J) on the lift by the gravitational force in this process? c. What is the total work done (in J) on the lift?▾ Part A A system of two objects has AKtot 7 J and AUnt=-3 J. = Vocals Search B N How much work is done by interaction forces? Express your answer in joules. Wint ΜΕ ΑΣΦ Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B How much work is done by external forces? Express your answer in joules. Wat ΜΕ ΑΣΦ Submit Request Answer Provide Feedback msi ENTER SHIFT ? J J NO.
- 1- An object is constrained to move inside a vertical ring near the surface of Earth as shown in the picture. Answer the following questions: What are the forces acting on the object b) is the work done by each force zero, positive or negativel S1. How much work was done by a machine that exerts a 5000 N force to compress a 10-meter-long steel bar so it becomes 3 meters in length. 2. Find the angle between the 500 N applied force and the 3-meter displacement if the work done is 1500 Joules. Hiii please write a solution thank youI want the correct answer with explanation
- 2. A boy pulls a 26.0-kg box with a 170-N force at 38° above a horizontal surface. If the coefficient of kinetic friction between the box and the horizontal surface is 0.18 and the box is pulled a distance of 28.0 is the net work done on the box? J 16 cct il6 cci16 what 091103 5 cci16 cei cei167. A force of 180 N stretches a spring 0.050 m beyond its unstretched length. a. What is the spring constant of this spring? b. What magnitude of force is needed to stretch the spring 0.012 m beyond its unstretched length? C. How much work must be done to stretch the spring 0.012 m beyond its unstretched length? d. What magnitude of force is needed to compress the spring 0.025 m? e. How much work must be done to compress the spring 0.025 m?A horizontal carousel is rotating around its axis with constant angular velocity w. On the carousel there is a straight track passing through its middle. A cart of mass m is traveling along the track with constant velocity v relative to the carousel. Note that there is friction between the cart and the carousel. FR XR