PHYS.160-3H2 Recitation with Dr. Harold A. Geller on Potential Energy
In this PHYS.160-3H2 recitation session led by Dr. Harold A. Geller, students delve into concepts surrounding potential energy, with a focus on compressed springs. The session covers practical examples and iClicker questions to enhance understanding. Explore the relationship between potential energy in springs and changes in length, as well as the comparisons with kinetic energy in moving bodies. Engage with the content provided, including lecture details and resources to deepen comprehension of these fundamental physics principles.
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Presentation Transcript
PHYS 160-3H2 0830-0920 Thursdays Planetary Hall Room 220 Week 9 with Dr. Harold A. Geller Office: Planetary Hall Room 233
Again, dont forget the Again, don t forget the webpage for this recitation webpage for this recitation http://physics.gmu.edu/~hgeller/PHYS160-3H2spring2024/
Physics Homework Problem Physics Homework Problem Presentation Presentation
iClicker Question The potential energy stored in a compressed spring is to the change in the spring s length as the kinetic energy of a moving body is to the body s A speed B mass C radius D acceleration
iClicker Question The potential energy stored in a compressed spring is to the change in the spring s length as the kinetic energy of a moving body is to the body s A speed B mass C radius D acceleration
iClicker Question A 0.1 meter spring is attached to a vertical wall. It is stretched from equilibrium to position A, which is 0.15 meter from the wall. It is then stretched to position B which is 0.2 meter from the wall. Compared to the spring s potential energy at position A, what is its potential energy at potential B? A the same B twice as great C one-half as great D four times as great
iClicker Question A 0.1 meter spring is attached to a vertical wall. It is stretched from equilibrium to position A, which is 0.15 meter from the wall. It is then stretched to position B which is 0.2 meter from the wall. Compared to the spring s potential energy at position A, what is its potential energy at potential B? A the same B twice as great C one-half as great D four times as great
iClicker Question What is the spring constant of a spring of negligible mass that gained 8 joules of potential energy as a result of being compressed 0.4 meter? A 100 N/m B 50 N/m C 0.3 N/m D 40 N/m
iClicker Question What is the spring constant of a spring of negligible mass that gained 8 joules of potential energy as a result of being compressed 0.4 meter? A 100 N/m B 50 N/m C 0.3 N/m D 40 N/m
iClicker Question A block of mass M sits on a frictionless surface and is pushed, compressing a spring 0.1 meter. The spring constant is 200 newtons per meter? What force is required to compress the spring 10 meters? A 0.5 N B 20 N C 200 N D 2000 N
iClicker Question A block of mass M sits on a frictionless surface and is pushed, compressing a spring 0.1 meter. The spring constant is 200 newtons per meter? What force is required to compress the spring 10 meters? A 0.5 N B 20 N C 200 N D 2000 N
iClicker Question A block of mass M sits on a frictionless surface and is pushed, compressing a spring 0.1 meter. The spring constant is 200 newtons per meter? How much potential energy is stored in the spring? A 1 J B 10 J C 1000 J D 10,000 J
iClicker Question A block of mass M sits on a frictionless surface and is pushed, compressing a spring 0.1 meter. The spring constant is 200 newtons per meter? How much potential energy is stored in the spring? A 1 J B 10 J C 1000 J D 10,000 J
iClicker Question A spring with a spring constant of 80 newtons per meter is displaced 0.3 meter from its equilibrium position. What is the potential energy stored in the spring? A 3.6 J B 7.2 J C 12 J D 24 J
iClicker Question A spring with a spring constant of 80 newtons per meter is displaced 0.3 meter from its equilibrium position. What is the potential energy stored in the spring? A 3.6 J B 7.2 J C 12 J D 24 J
iClicker Question The work done on a slingshot is 40 joules to pull back a 0.1 kilogram stone. If the slingshot projects the stone straight up in the air, what is the maximum height to which the stone will rise (neglecting all friction)? A 0.41 m B 41 m C 410 m D 4.1 m
iClicker Question The work done on a slingshot is 40 joules to pull back a 0.1 kilogram stone. If the slingshot projects the stone straight up in the air, what is the maximum height to which the stone will rise (neglecting all friction)? A 0.41 m B 41 m C 410 m D 4.1 m
