The distance the box will slide up theincline isī) Suppose a box of mass M is used to compress the spring distance2x, and is released from rest. Wednesday, MaEmergency Live - Pre-Hospital Care, Ambulance Services, Fire Safety and Civil Protection Magazine. When a box of mass M compresses the spring distance x andis released from rest, the box slides distance d up the incline(measured from where the box is at rest).Ī) Suppose a box of mass 2M is used to compress the spring distancex,and is released from rest. âin procedure 3: a spring is at the bottom of a frictionlessincline. Express your answer in terms of some or all of the variables m, g, h, µ k, & (2 points).SOLUTION:Potential energy of the system W P E ,Work done by the friction is given as W F ,W P E m g h (9)W F µ k dNcos () (10)Where d is the horizontal distance up the slope d h/sin (). Find the speed of the cart as it passesphotogate 1.Ĥ. Team member Derek Chinn said he, Karl Johnson. ī) Suppose the cart is released at rest at photogate 2 (the higherpoint on the track). An alpine rescue team is using a slingshot to send an emergency medical packet to climbers stranded on a ledge, as shown in Fig. On Wednesday morning, a helicopter with Alpine Rescue Team aboard tried again to reach the pair, but failed again due to weather conditions. The bottom of the track is at 0 J potential energy.Ī) Find the potential energy of the cart. There is some friction present the kinetic coefficient of friction is 6.00×10. (Hint: It might be helpful to run the problem in reverse, with the top of the mountain representing the launch point. You are a member of an alpine rescue team and must get a box of supplies, with mass 2.60 kg, up an incline of constant slope angle 30.0 so that it reaches a stranded skier who is a vertical distance 3.10 m above the bottom of the incline. 4-34 (height-268 m, horizontal distance401 m, landing angle729 below the horizontal). Photogate 1 isat the 29.3 cm mark, and photogate 2 is at the 62.5 cm mark alongthe track, Assume An alpine rescue team is using a slingshot to send an emergency medical packet to climbers stranded on a ledge, as shown in Fig. In procedure 2: an inclined plane is 120 cm long, and is tippedat angle ? = 10.5o. Atwhat height would M have to start so the speed of M at the bottomis 2v?ģ. In procedure 1: a box of mass M starts from rest at height h,and slides down a frictionless incline.Ī) If the mass of the box increases, the acceleration of the box onthe inclineī) Suppose the speed of M at the bottom of the incline was v. How muchwork was done by friction on the mass? (Give the answer as apositive number.)Ģ. Suppose a 94.5 kg mass is 3.75 m above the ground, and is droppedfrom rest.Ī) If there is no friction, at what speed will the mass hit theground?ī) Suppose the mass now hits the ground at speed 5.72 m/s.
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