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(g) From parts (d), (e), and (f), determine her maximum airborne height ymay in terms of h and the launch angle 0. (Use any variable or symbol stated above as necessary.) 1– cos(0)² Ymax = 5

(g) From parts (d), (e), and (f), determine her maximum airborne height ymay in terms of h and the launch angle 0. (Use any variable or symbol stated above as necessary.) 1– cos(0)² Ymax = 5

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A child of mass m starts from rest and slides without friction from a height h along a slide next to a pool (see figure). She is launched from a height h/5 into the air over the pool. We wish to find the maximum height she reaches above the water in her projectile motion. Ymax th/5 (a) Is the child-Earth system isolated or nonisolated? isolated nonisolated Why? This answer has not been graded yet. (b) Is there a nonconservative force acting within the system? Yes No
Transcribed Image Text:A child of mass m starts from rest and slides without friction from a height h along a slide next to a pool (see figure). She is launched from a height h/5 into the air over the pool. We wish to find the maximum height she reaches above the water in her projectile motion. Ymax th/5 (a) Is the child-Earth system isolated or nonisolated? isolated nonisolated Why? This answer has not been graded yet. (b) Is there a nonconservative force acting within the system? Yes No
(c) Define the configuration of the system when the child is at the water level as having zero gravitational potential energy. Express the total energy of the system when the child is at the top of the waterslide. (Use any variable or symbol stated above along with the following as necessary: g.) E = mgh (d) Express the total energy of the system when the child is at the launching point. (Use any variable or symbol stated above along with the following as necessary: g and v; for her speed at the launch point.) E = 2 mv? + mgh (e) Express the total energy of the system when the child is at the highest point in her projectile motion. (Use any variable or symbol stated above along with the following as necessary: g, v, for her speed at maximum height, and y for her maximum airborne height.) m 1 mv² + mgy, 2 E = m (f) From parts (c) and (d), determine her initial speed v; at the launch point in terms of g and h. 8gh (g) From parts (d), (e), and (f), determine her maximum airborne height ymax in terms of h and the launch angle 0. (Use any variable or symbol stated above as necessary.) 1- cos(0)2 h Ymax 5 (h) Would your answers be the same if the waterslide were not frictionless? Yes O No
Transcribed Image Text:(c) Define the configuration of the system when the child is at the water level as having zero gravitational potential energy. Express the total energy of the system when the child is at the top of the waterslide. (Use any variable or symbol stated above along with the following as necessary: g.) E = mgh (d) Express the total energy of the system when the child is at the launching point. (Use any variable or symbol stated above along with the following as necessary: g and v; for her speed at the launch point.) E = 2 mv? + mgh (e) Express the total energy of the system when the child is at the highest point in her projectile motion. (Use any variable or symbol stated above along with the following as necessary: g, v, for her speed at maximum height, and y for her maximum airborne height.) m 1 mv² + mgy, 2 E = m (f) From parts (c) and (d), determine her initial speed v; at the launch point in terms of g and h. 8gh (g) From parts (d), (e), and (f), determine her maximum airborne height ymax in terms of h and the launch angle 0. (Use any variable or symbol stated above as necessary.) 1- cos(0)2 h Ymax 5 (h) Would your answers be the same if the waterslide were not frictionless? Yes O No
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