There is a 2.69 kg box at three points in time. The box starts with 450 Joules of mechanical energy. At time 1 the object is at rest in the air. At time 2 the box is moving along the ground to the left. At time 3 the box is compressed against a spring with a spring constant of 1098 N/m at. Assume that mechanical energy is conserved for this problem. A.What is the height of the box in time 1? __________meters B.What is the box's velocity at time 2? ___________ m/s C. How far is the box compressed against the spring at time 3? _____________meters

A freight company uses a compressed spring to shoot 1.90 kg packages up a 1.00-m-high frictionless ramp into a truck, as (Figure 1) shows. The spring constant is 312 N/m and the spring is compressed 35.0 cm Figure 1 of 1 Part A What is the speed of the package when it reaches the truck? Express your answer with the appropriate units. V= Submit ON F Value μÁ n Request Answer Units ?

For the system below, let k = 200 N/m, b = 20 N*s/m, and m = 0 kg. For the following cases, sketch the displacement graph over time and define the energy stored in the system at the beginning and at steady state. a. x(0) = 0; f(t) = 0 b. x(0) = 0.3m; f(t) = 0 C. x(0) = 0m; f(t) = 25 N m = 0 k ий 1+1 f(t) b

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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

Learning Goal: Recall that the work W done by a constant force Fat an angle to the displacement Ar is W = F· A7 = FAr cos 0. The vector magnitudes F and Ar are always positive, so the sign of Wis determined entirely by the angle between the force and the displacement. Figure AP 1 of 1

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

In a physics lab experiment, a compressed spring launches a 30 g metal ball at a 35° angle. Compressing the spring 18 cm causes the ball to hit the floor 2.0 m below the point at which it leaves the spring after traveling 6.0 m horizontally. Part A What is the spring constant? Express your answer with the appropriate units. ▸ View Available Hint(s) ī Submit μÀ k= Value Units ?

This is a Dynamics of Rigid Bodies subject. The figure below shows a 5-kg slider which is released at A and slides along a smooth circular rod until it reaches point B. The stiffness of the spring, K = 400 N/m and has an un-stretched length of 750 mm. a. What is the gravitational potential energy of the slider at B? (Note : Reference datum is at A)b. What is the change in elastic potential energy of the spring? (Tip : ⧍PE = PE2 - PE1 )c. What is the velocity of the slider at B? ( Tip : Conservative forces)

Let the gravitational potential energy of the earth-satellite system be zero in the limit that the orbit radius is very Gm m large, so the total mechanical energy of the satellite-earth system is given by B = Part A If the kinetic energy of the satellite is 2.00 x 10° J, what is the total energy of the satellite--earth system? Express your answer with the appropriate units. Template Undo redo Teset keyboard shortcuts Help Units Request Answer Part B If the kinetic energy of the satellite is 2.00 x 10° J, what is the gravitational potential energy of the satellite-earth system? Express your answer with the appropriate units. Tamplator Templates Symbols Undo rapo Peser keyboard shortcuts Help E= Submit U= Submit Value Value Request Answer Units