Suppose you are working on designing a t-shirt launch cannon that works via a spring mechanism and still want to launch that t-shirt to Dr. Porter. If you plan to launch at 45 degrees, need a speed of 30 m/s and the cannon is 0.2 meters long… What is the final kinetic energy of the 2.0 kg t-shirt upon leaving the cannon? What must the spring constant be to reach this final speed? If instead you launched the t-shirt straight up, what maximum height would it reach?

Q: A champion athlete can produce one horsepower (746 W) for a short period of time. If a 70-kg athlete…

A: To go to the top of a 254 m highmountain, the athlete needs to gaina potential energy = mgh⇒P>E =…

Q: What is the elastic potential energy of a rubber band with a spring constant of 25.0 N/m if it is…

A: Elastic potential energy of a rubber is given as follows: E=12kx2 E is the energy k is the spring…

Q: A 15 N force is use to compress a spring constant k= 500 N/m. What distance is the spring…

A: Given: Force is used to compress a spring F = 15 N Spring constant K = 500 N/m

Q: An ideal spring of negligible mass is 13.00 cm long when nothing is attached to it. When you hang a…

A:

Q: The launching mechanism of a toy gun consists of a spring of unknown spring constant, as shown in…

A:

Q: How much energy is stored in a spring with a spring constant of 15O N/m if it is compressed a…

A: Given information The spring constant of the spring, k=150 N/m The compression in the spring, x=0.4…

Q: A block of mass ?=0.350kg is released from rest, from a curved ramp of height h= 42.0 cm(point Ain…

A:

Q: A child's pogo stick stores energy in a spring with force constant of 2.50×10 4 N/m At position A (x…

A: Given: Force constant of spring is 2.5×104N/m At position A, xA=-0.100m, child is momentarily at…

Q: The figure shows a pendulum of length L = 1.7 m. Its bob (which effectively has all the mass) has…

A:

Q: ou pull on a metal spring with a force of 8983 newtons and it increases in length by 0.025 meter.…

A:

Q: block of mass 3.40 kg is placed against a horizontal spring of constant k = 855 N/m and pushed so…

A:

Q: A 120 g arrow is shot vertically from a bow whose effective spring constant is 430 N/m. If the bow…

A: Given  Mass of arrow m = 120 g = 0.12 kg Spring constant = 430 N/m Length to which now is drawn x =…

Q: Suppose a 0.74−kg mass on a spring that has been compressed 0.100 m has elastic potential energy of…

A:

Q: Q5. A stone weighing 1 kg is dropped from rest from a height of 4 mabove the ground. When it has…

A:

Q: During a crash test, a 900kg car moving at 25 m/s hits an uncompressed horizontal spring with a…

A:

Q: The energy stored in a spring is 20 J when it is stretched to 5cm. How much energy is stored when it…

A: Given data: Energy stored in spring (U) = 20 J Stretch in spring (x) = 5 cm New stretch in spring…

Q: When a body is brought down from a height H, to height H2, the Potential Energy of the body…

A: potential energy =mgH   where m = mass of body          g = acceleration due to gravity     H =…

Q: You weigh 530 NN. Your bathroom scale contains a light but very stiff ideal spring. When you stand…

A: Given data The weight of myself on the bathroom scale is W = 530 N The initial compression in the…

Q: A toy rocket with a mass of 361 grams is launched into the air using a spring.  At the apex of the…

A: Given: The mass of the rocket is 361 g. The speed of the rocket is 14.9 m/s. The height of the…

Q: You throw a ball of mass 15.0 kg straight upward into free fall with an initial kinetic energy of…

A: Given: Mass of ball = 15.0 kg. Initial kinetic energy = 7.0 J

Q: A child’s pogo stick (Fig. P5.81) stores energy in a spring (k = 2.50 ×104 N/m). At position Ⓐ (x1 =…

A: Since there are multiple sub-parts posted, we will answer the first three sub-parts. If you want any…

Q: A cheetah has 5 joules of kinetic energy and runs up a 5 m hill. When it gets to the top of the…

A: potential energy only due to position  = m g h according to law of conservation of energy loss in…

Q: A pogo stick has a spring with a force constant of 2.50×104 N/m, which can be compressed 12.0 cm. To…

A:

Q: You have a 120-g yo-yo that you are swinging at 0.9 m/s. How much energy does it have? How high can…

A: m = 0.12 kg  v =0.9 m/s

Q: energy 1. A 70.0 kg man jumping from a window lands in an elevated fire rescue net 11.0 m below the…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: A block of mass 2.80 placed against a horizontal spring of constant k 885 N/m and pushed so the…

A:

Q: A toy rocket with a mass of 328 grams is launched into the air using a spring.  At the apex of the…

A: kinetic energy is given as  K= 1/2 M V^2 here M is the mass and V is the speed of body

Q: 7. Consider a ball thrown straight up in the air. At what position is its kinetic energy a maximum?…

A: Let us consider a ball thrown upwards in the air with an initial velocity of 'u' m/s. As the ball is…

Q: metres and the velocity is 10.3 m/s. What is the kinetic energy (in J) of the rocket at this…

A: The answer is below

Q: A 0.500-kg particle has a speed of 1.30 m/s at point A and kinetic energy of 7.00 J at point B.…

A: mass of particle (m) = 0.5 kg speed of particle at A (u) = 1.30 m/s kinetic energy of particle at…

Q: 300 The mass of a pendulum bob is 0-2 kg, and it is suspended by a string 1 m long. It is pulled…

A:

Q: The spring in a retractable ballpoint pen is 1.8 cm long, with a 300 N/m spring constant. When the…

A: The expression for find required energy is U=12kx2

Q: At rest, a 59.0 kg cheetah can run at a top speed of 32.7 m/s, according to this video. In…

A: Given, Mass of the cheetah (m)=59.0 kg Top speed of the cheetah (v)=32.7 m/s A food calorie =4186 J

Q: 5-kg sled has a potential energy of 6500 J at position A above the ground. When the sled strikes the…

A: Given  potential energy (U)=6500 J mass(m)=5 kg

Q: A 28 kg child uses a pogo stick to bounce up and down. The spring constant, k, of the toy equals…

A: Mass of the child,

Q: A child's pogo stick (Fig. P5.77) stores energy in a spring (k = 2.50 x 10* N/m). At position @ (x =…

A:

Q: 5 A block with a mass, mi = 2.5kg, sits a distance d = 85cm from the top of a frictionless ramp at…

A: Given Compression in spring x = 15 cm =0.15 m Spring constant k =1600 N/m Mass m1 =2.5 kg

Q: In regards to springs and different masses; At what point is the potential energy of the system…

A: The total energy of the mass-spring system is the sum of the kinetic energy (KE) and the potential…

Q: A bicyclist is stopped at the entrance to a valley, as sketched below: Where would the bicyclist…

A:

Q: hat is the potential energy stored in a 5kg body attached to a spring with a constant 5220N/m…

A:

Q: A 500000g roller coaster car trayeling at 30 m/s is stopped by a spring with a spring constant of…

A: Given data: Mass (m) = 500000 g = 500 kg Initial velocity (v) = 30 m/s Final velocity (vf) = 0 m/s…

Q: What 2 variables affect the skater’s kinetic energy?

A: If an object has mass 'm' and velocity 'v', then the kinetic energy of the object is given by:…