Chapter 5 Work and Energy continued
... You are investigating the safety of a playground slide. You are interested in finding out what the maximum speed will be of children sliding on it when the conditions make it very slippery (assume frictionless). The height of the slide is 2.5 m. What is that maximum speed of a child if she starts fr ...
... You are investigating the safety of a playground slide. You are interested in finding out what the maximum speed will be of children sliding on it when the conditions make it very slippery (assume frictionless). The height of the slide is 2.5 m. What is that maximum speed of a child if she starts fr ...
Four Energy Problems In this note I give the math behind various
... vector velocity v and the wind blows with constant velocity w, both of these being constant in time and nonvanishing. The power required to maintain that speed is P = − v ⋅ D(v, w) where D is the drag, given by Newton’s law D(v, w) = c|w − v| (w − v) . This result holds only if the power required is ...
... vector velocity v and the wind blows with constant velocity w, both of these being constant in time and nonvanishing. The power required to maintain that speed is P = − v ⋅ D(v, w) where D is the drag, given by Newton’s law D(v, w) = c|w − v| (w − v) . This result holds only if the power required is ...
Serway_PSE_quick_ch08
... an initial speed v. It slides until it stops due to the friction force between the block and the surface. The surface is now tilted at 30°, and the block is projected up the surface with the same initial speed v. Assume that the friction force remains the same as when the block was sliding on the ho ...
... an initial speed v. It slides until it stops due to the friction force between the block and the surface. The surface is now tilted at 30°, and the block is projected up the surface with the same initial speed v. Assume that the friction force remains the same as when the block was sliding on the ho ...
KINETIC/POTENTIAL ENERGY #2
... A 4.00-gram rubber band is held 1.30 m above the ground and is stretched 10.0 cm from its rest position. If the spring constant of the rubber band is 365 N/m, how much total mechanical energy does the rubber band have? ...
... A 4.00-gram rubber band is held 1.30 m above the ground and is stretched 10.0 cm from its rest position. If the spring constant of the rubber band is 365 N/m, how much total mechanical energy does the rubber band have? ...
Transformations of Energy Lab Transformations of Energy Lab
... B) You predicted that the ball would lose some energy due to heat. Find out how much in this part. Have a cup of just enough water (make sure to measure it!!) to cover the ball standing by, with a thermometer or temperature probe already in it. Bounce the ball from 1 meter again. This time do not w ...
... B) You predicted that the ball would lose some energy due to heat. Find out how much in this part. Have a cup of just enough water (make sure to measure it!!) to cover the ball standing by, with a thermometer or temperature probe already in it. Bounce the ball from 1 meter again. This time do not w ...
PES 1110 Fall 2013, Spendier Lecture 37/Page 1 Today
... In what direction is the gravitational force on mass M2. It is towards the center of mass M1. Since the force is towards the center of M1 all we need to worry about is the change in size of radius r. How does r get bigger? By going away from the planet, we increase ...
... In what direction is the gravitational force on mass M2. It is towards the center of mass M1. Since the force is towards the center of M1 all we need to worry about is the change in size of radius r. How does r get bigger? By going away from the planet, we increase ...
HW6.1 – This is a lot of work!
... c) How fast would each person have to go to double their kinetic energy? (How is v related to K?) d) By what factor does the runners’ kinetic energy increase if their speed is doubled? 9. A 1200-kg automobile travels at 25 m/s. a. What is its kinetic energy? b. What net work would be required to bri ...
... c) How fast would each person have to go to double their kinetic energy? (How is v related to K?) d) By what factor does the runners’ kinetic energy increase if their speed is doubled? 9. A 1200-kg automobile travels at 25 m/s. a. What is its kinetic energy? b. What net work would be required to bri ...
Science Final Review
... In which kind of chemical reaction do two or more substances combine to form one new compound? a) b) c) d) ...
... In which kind of chemical reaction do two or more substances combine to form one new compound? a) b) c) d) ...
Saturday X-tra - Mindset Learn
... vertical component of the force that tends to lift the object upwards. Such vertical component equals FΔxsinθ. Work is not done when … - an object does not move although a force is applied. - when the force is at right angle (perpendicular) to the displacement. - when there is no resultant force act ...
... vertical component of the force that tends to lift the object upwards. Such vertical component equals FΔxsinθ. Work is not done when … - an object does not move although a force is applied. - when the force is at right angle (perpendicular) to the displacement. - when there is no resultant force act ...
Chapter 7: Problem Solving
... This is called the law of conservation of energy. In any system where friction is present, the thermal energy of the system will increase. The increase in thermal energy when kinetic friction is present is given by ΔEth = fkΔx. For most ordinary systems that we will study, the forms of energy that ...
... This is called the law of conservation of energy. In any system where friction is present, the thermal energy of the system will increase. The increase in thermal energy when kinetic friction is present is given by ΔEth = fkΔx. For most ordinary systems that we will study, the forms of energy that ...
Conservation of Mechanical Energy – Concepts
... Conservation of Mechanical Energy – Concepts INTRODUCTION When a body moves, some things—such as its position, velocity, and momentum—change. It is interesting and useful to consider things that do not change. The total energy is a quantity that does not change; we say that it is conserved during th ...
... Conservation of Mechanical Energy – Concepts INTRODUCTION When a body moves, some things—such as its position, velocity, and momentum—change. It is interesting and useful to consider things that do not change. The total energy is a quantity that does not change; we say that it is conserved during th ...
PHY131H1F - Class 11 - University of Toronto Physics
... each other and nothing else. There are two ways to define a system. System 1 consists only of the two particles, the forces are external, and the work done by the two forces change the system’s kinetic energy. ...
... each other and nothing else. There are two ways to define a system. System 1 consists only of the two particles, the forces are external, and the work done by the two forces change the system’s kinetic energy. ...