A spring with a spring constant of (4.4907x10^4) N/m is stretched from an initial extension of (8.00x10^-2) m to a final extension of (2.229x10^-1) m. Calculate the work that must be done by the external force. Give your answer to 2 s.f.
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- Suppose it takes 5 ft-lb of work to compress a spring from its natural length of 4 ft to a length of 2 ft. Find the work it takes to stretch the spring from its natural length to a length of 7 ft. Be sure to write the units for your answer.Please answer the foITO 1. T Calculate the work done from x=0 to x = 7 m by the one-dimensional force depicted in the following graph. Suppose that Fo = 68N, calculate the total work by the force over 7 m. % 5 Fo -Fo W= Search 16 1 6 2 17 & 3 Q+ 7 4 5 * 90 Q 6 7 ।ব x (m) f10 >II fn DDI f12 849A force, varying with distance as shown in the graph below, acts on a 5.5 kg object. When is most work done, in the first 4 meters or between 4 and 6 meters? Explain your response. a. 4.0 3.0 2.0 1.0 b. Find the work done by the force in moving the object from 0 m to 6.0 m. Explain your calculation and give units. 2.0 4.0 6.0 8.0 Positien Cr Figure 9-15 Assuming that there is no friction or air resistance what is the total change in the object's energy? Explain your answer. с. kinetic FORCE (N)
- A certain sprìng whose normal length is 42 cm is stretched 6.3 cm by a force of 18 N. How much work is done in stretching the spring from its normal length to a length of 44.7 cm? work= Number N. m Round your answer to 4 decimal placesShow work! ThanksOn a frictionless horizontal surface, a 6.84 kg block is pushed up against a 55,404 N/m spring. The block is then released and upon leaving the spring it is going 25.2 m/s. A.) Determine how much the spring was compressed. ( = B.) The block then moves up a hill that is not frictionless. Determine what height the block reaches if 456J of thermal energy is produced. h =
- The force on a particle is directed along an x axis and given by F = Fo(x/xo - 1) where x is in meters and F is in Newtons. If Fo = 1.2 N and Xo = 2.7 m, find the work done by the force in moving the particle from x =0 to x = 2xo m. Number i UnitsA force of 17 Ib is required to hold a spring stretched 3 in. beyond its natural length. How much work W is done in stretching it from its natural length to 9 in. beyond its natural length?A 15.1-kg box is being pushed from the bottom to the top of a frictionless ramp. When the box is pushed at a constant velocity, the nonconservative pushing force does 58.0 J of work. How much work is done by the pushing force when the box starts from rest at the bottom and reaches the top of the same ramp with a speed of 1.50 m/s? Wnc = Number i Units
- The force on a particle is directed along an x axis and given by F = Fo(x/xo - 1) where x is in meters and F is in Newtons. If Fo= 1.4 N and xo = 2.3 m, find the work done by the force in moving the particle from x = 0 to x = 2x0 m. Number i UnitsA spring has a natural length of 2 ft. A force of 20 lb stretches the spring to a length of 3 ft. Find the spring constant. Then calculate the amount of work done in stretching the spring from its natural length to 3 ft. How much work is done in stretching the spring from 4 ft to 5 ft. How far beyond the natural length will a 30 lb force stretch the spring?7. A 1650 kg car accelerates up a hill by applying a force of 4.61 × 10³ N parallel to the hill. The hill is at an incline of 13°. m 2016 d = 17 m 13° A. What is the net work done on the car as it travels 17 m up the hill? (Hint: calculate the work done by each force in the system. There are 3 forces. The net work is the sum of the works done by each individual force.) b. What is the change in kinetic energy for the car? at the bottom of the hill. How fast is it moving at the top The car is travelling at a speed of 16 of the hill? I= c) 74°F