A 500-m-long ski slope drops at an angle of 6.4∘ relative to the horizontal. 1. Determine the...
A 500-m-long ski slope drops at an angle of 6.4∘
relative to the horizontal.
1. Determine the change in gravitational potential energy of a
65-kg skier-Earth system when the skier goes down this slope.
2. If 20% of the gravitational potential energy change is converted
into kinetic energy, how fast is the skier traveling at the bottom
of the slope?
Homework Answers
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A 500-m-long ski slope drops at an angle of 6.4∘
relative to the horizontal.
1. Determine the...
A skier speeds down a smooth ski slope which is at an angle of e 20°...
A skier speeds down a smooth ski slope which is at an angle of e 20° with the horizontal. The mass of the skier is 61 kg. Take the downhill direction to be positive and uphill to be negative. (a) What net force (in N) is acting on the skier? (Indicate the direction with the sign of your answer.) N (b) What is the acceleration (in m/s2) experienced by the skier? (Indicate the direction with the sign of your answer.)...
A skier speeds down a smooth ski slope which is at an angle of e 20°...
A skier speeds down a smooth ski slope which is at an angle of e 20° with the horizontal. The mass of the skier is 61 kg. Take the downhill direction to be positive and uphill to be negative. (a) What net force (in N) is acting on the skier? (Indicate the direction with the sign of your answer.) N (b) What is the acceleration (in m/s2) experienced by the skier? (Indicate the direction with the sign of your answer.)...
Starting from rest, a 29.2 kg child rides frictionless ski slope. At the bottom of the...
Starting from rest, a 29.2 kg child rides frictionless ski slope. At the bottom of the hill, her speed is 8.25 kg sled down a a 6.8 m/s. If the slope makes an angle of 15.5° with respect to the horizontal, how far along the hill did she slide on C her sled? 0.235 distance Momentum and Energy 2 Based on the previous question you can conclude that if two objects of different mass have the same magnitude of momentum,...
A child with a weight of 200 N swings on a playground swing attached to 2.00-m-long...
A child with a weight of 200 N swings on a playground swing attached to 2.00-m-long chains. What is the gravitational potential energy of the child- Earth system relative to the child's lowest position at the following times? (a) when the chains are horizontal j (b) when the chains make an angle of 30.0° with respect to the vertical J (c) when the child is at his lowest position A pendulum bob with a mass of 0.370 kg is attached...
A skier with mass 64.0 kg starts at rest at the top of an 842 m...
A skier with mass 64.0 kg starts at rest at the top of an 842 m long ski slope, which makes an angle 13.0 ∘ with the horizontal. A typical coefficient of friction between skis and snow is 5.20×10−2. skiers don't go straight down the hill- they zigzag back and forth. Even though they still end up at the bottom of the hill, they've lost more energy to friction because friction is a non-conservative force. Let's say due to zigzagging,...
A 62.0 kg skier is moving at 6.50 m/s on a frictionless, horizontal snow covered plateau when she encounters a rough patch 3.50 m long
A 62.0 kg skier is moving at 6.50 m/s on a frictionless, horizontal snow covered plateau when she encounters a rough patch 3.50 m long. The coefficient of kinetic friction between this patch and returning to friction-free snow, she skis down an icy, frictionless hill 2.50 m high. (a) How fast is the skier moving when she gets to the bottom of the hill? (b) How much internal energy was generated in crossing the rough patch?
A pendulum bob with a mass of 0.370 kg is attached to a 1.5 m long...
A pendulum bob with a mass of 0.370 kg is attached to a 1.5 m long string as shown. As the pendulum bob swings from point A, where the angle 0 = 36.0°, to point B at the bottom of its arc, determine the change in the gravitational potential energy of the pendulum bob-earth system. J 1.5 m B
A pendulum bob with a mass of 0.370 kg is attached to a 1.5 m long...
A pendulum bob with a mass of 0.370 kg is attached to a 1.5 m long string as shown. As the pendulum bob swings from point A, where the angle 0 = 36.0°, to point B at the bottom of its arc, determine the change in the gravitational potential energy of the pendulum bob-earth system. به 1.5 m B
A playground slide is 7.50 ft long and makes an angle of 29.0° with the horizontal....
A playground slide is 7.50 ft long and makes an angle of 29.0° with the horizontal. A 52.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) Choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? What is the change in potential energy as the child slides from the top to...
can i get help with these problems A 32.0 kg child is in a swing that...
can i get help with these problems
A 32.0 kg child is in a swing that is attached to a pair of ropes 1.75 m long. Find the gravitational potential energy of the child-Earth system relative to child's lowest position, when The ropes are horizontal (7 points) The ropes make a 20.0° angle with the vertical (8 points) The child is at the bottom of a circular arc [7 points)
A skier speeds down a smooth ski slope which is at an angle of e 20° with the horizontal. The mass of the skier is 61 kg. Take the downhill direction to be positive and uphill to be negative. (a) What net force (in N) is acting on the skier? (Indicate the direction with the sign of your answer.) N (b) What is the acceleration (in m/s2) experienced by the skier? (Indicate the direction with the sign of your answer.)...
A skier speeds down a smooth ski slope which is at an angle of e 20° with the horizontal. The mass of the skier is 61 kg. Take the downhill direction to be positive and uphill to be negative. (a) What net force (in N) is acting on the skier? (Indicate the direction with the sign of your answer.) N (b) What is the acceleration (in m/s2) experienced by the skier? (Indicate the direction with the sign of your answer.)...
Starting from rest, a 29.2 kg child rides frictionless ski slope. At the bottom of the hill, her speed is 8.25 kg sled down a a 6.8 m/s. If the slope makes an angle of 15.5° with respect to the horizontal, how far along the hill did she slide on C her sled? 0.235 distance Momentum and Energy 2 Based on the previous question you can conclude that if two objects of different mass have the same magnitude of momentum,...
A child with a weight of 200 N swings on a playground swing attached to 2.00-m-long chains. What is the gravitational potential energy of the child- Earth system relative to the child's lowest position at the following times? (a) when the chains are horizontal j (b) when the chains make an angle of 30.0° with respect to the vertical J (c) when the child is at his lowest position A pendulum bob with a mass of 0.370 kg is attached...
A pendulum bob with a mass of 0.370 kg is attached to a 1.5 m long string as shown. As the pendulum bob swings from point A, where the angle 0 = 36.0°, to point B at the bottom of its arc, determine the change in the gravitational potential energy of the pendulum bob-earth system. J 1.5 m B
A pendulum bob with a mass of 0.370 kg is attached to a 1.5 m long string as shown. As the pendulum bob swings from point A, where the angle 0 = 36.0°, to point B at the bottom of its arc, determine the change in the gravitational potential energy of the pendulum bob-earth system. به 1.5 m B
can i get help with these problems
A 32.0 kg child is in a swing that is attached to a pair of ropes 1.75 m long. Find the gravitational potential energy of the child-Earth system relative to child's lowest position, when The ropes are horizontal (7 points) The ropes make a 20.0° angle with the vertical (8 points) The child is at the bottom of a circular arc [7 points)
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