Calculate the force constant of its plunger's spring if you must compress it 0.19 m to drive the 0.0300-kg plunger to a top speed of 21 m/s. k=k=        What force must be exerted to compress the spring? F=F=  N

A block with mass 0.50 kg is forced against a horizontal spring of negligible mass, compressing the spring a distance of 0.20 mm (Figure 1). When released, the block moves on a horizontal tabletop for 1.00 mm before coming to rest. The spring constant k is 100 N/m. What is the coefficient of kinetic friction between the block and the tabletop

10 cm long spring, with a spring constant of 27 N/m, is used to reload the ball in a pinball machine. The spring is compressed by 4.0 cm by a mechanism in the machine and then let go. a. Calculate the elastic potential energy stored in the spring A new spring is fitted into the machine. It only needs to be compressed by 3.0 cm to store the same amount of elastic potential energy as the previus spring. b. Calculate the spring constant of this new spring The owner of the game wants to double the potential energy stored in this new spring. c. Calculate the compression of the spring needed in order to achieve this

Do it quickly

A 3.59 kg ball is held at rest exactly 3.7 meters in the air. Assume their is no spring in this problem. A. How much gravitational potential energy does the ball currently have? Joules B. How much kinetic energy does the ball currently have? Joules C. How much total mechanical energy does the ball have currently? Joules The ball is than allowed to fall to the ground. As the ball falls It gravitational potential energy gets converted into Kinetic Energy. The moment before hits the ground all of its energy is in the form of kinetic energy. D. How much G.P.E does the ball have the moment before it hits the ground? Joules E. How much kinetic energy does the ball have the moment before it hits the ground? Joules F. what is the ball's speed the instant before it hits the ground? m/s

2. The 200 g pellet is pushed against the spring and D released from rest at A. Neglecting friction, determine the smallest deflection of the spring for which the 0.6 m k-540 N/m pellet will travel around the loop and remain in contact C E with the loop at all times. m= 200 g

9 Spaceman Spiff lost his ship's altimeter during a freak meteor storm, but he needs to know when to deploy his retro rockets to insure a safe landing back on earth. Luckily, he has his trusty toy dart gun whose spring has a 110 N/m spring constant. He loads his 7.2 gram suction cup dart, compresses the spring 4.0 cm, takes vertical aim at the cabin ceiling, and shoots. The suction cup dart flies 1.47 meters above its initial spring-compressed position. What is Spiff's altitude above earth? a

Someone 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 Smeone. If you plan to launch at 45 degrees, need a speed of 30 m/s and the cannon is 0.2 meters long... A. What is the final kinetic energy of the 2.0 kg t-shirt upon leaving the cannon? E. What must the spring constant be to reach this final speed? C. If instead you launched the t-shirt straight up, what maximum height would it reach?