A trapeze artist jumps from her trapeze and spins through the air in a tuck position....
A trapeze artist jumps from her trapeze and spins through the air in a tuck position. As she moves through the air without changing her body position, which of the following are conserved? Select all that apply.
-angular momentum
-potential energy
-linear velocity
-linear momentum
-angular velocity
-kinetic energy
Homework Answers
Her angular momentum is conserved.
L = m v r sin(theta)
In the tucked position, her centre of mass comes in wards (r decreases), thus the angular velocity increases.. but the angular momentum is conserved
Add Answer to:
A trapeze artist jumps from her trapeze and spins through the air in a tuck position....
Emmy the trapeze artist flies through the air with her arms and legs stretched out, tumbling...
Emmy the trapeze artist flies through the air with her arms and legs stretched out, tumbling head over heels. As she rotates, she pulls her arms and legs close to her chest, as shown in the illustration As Emmy pulls her arms and legs in, how does her rotational inertia change? It increases. It decreases. It remains constant As Emmy pulls her arms and legs in, how does her angular momentum change? It increases It decreases It remains constant As...
A skydiver jumps from a plane and deploys her parachute. Do not neglect air resistance. After...
A skydiver jumps from a plane and deploys her parachute. Do not neglect air resistance. After the parachute is deployed, will the sum of kinetic energy plus potential energy be conserved (K+P=constant)? Why/why not?
1. What is the angular momentum of a 0.240-kg ball rotating on the end of a...
1. What is the angular momentum of a 0.240-kg ball rotating on the end of a thin string in a circle of radius 1.35 m at an angular speed of 15.0 rad/s ? 2. A diver can reduce her moment of inertia by a factor of about 4.0 when changing from the straight position to the tuck position. If she makes 2.0 rotations in 1.5 s when in the tuck position, what is her angular speed (rev/s) when in the...
please help with question 4. EXPERIMENT4: THE LINEAR AIR TRACK The aims of this experiment are...
please help with question 4.
EXPERIMENT4: THE LINEAR AIR TRACK The aims of this experiment are to: 1)investigate momentum and energy conservation in coll 2. study the cooversion of energy for a body in free fall. There are two types of collisions, elastic and inelastic. In both types of collision momentum is between two bodies in one dimension. The velocity (and hemee the momentum) may be positive or ycorserved. A body of mass m moving with a velocity vi has...
Wilhelmina is an avid ice skater who is also taking physics with her friend Darcy. Wilhelmina...
Wilhelmina is an avid ice skater who is also taking physics with
her friend Darcy. Wilhelmina is having a discussion with Darcy and
is trying to relate her skating experience to the discussions in
class about rotational kinetic energy and angular momentum.
Darcy reminds Wilhelmina that the instantaneous angular momentum,
, of a particle
relative to an axis through an origin O is defined by the
cross product of the particle's instantaneous position vector
relative to O, , and its...
A 75-kg volleyball player performs a maximum-effort vertical jump with an initial velocity of 3 m/s....
A 75-kg volleyball player performs a maximum-effort vertical jump with an initial velocity of 3 m/s. The player leaves the ground with an upright body position and also touches down with the same body position. Answer the following: ua A. How much will the player's center of mass (COM) travel in the air along the vertical direction during the ascending phase of the jump? Compute the maximum kinetic energy of the player during the jump. C. Compute the maximum potential...
PHYSICS 254 EXAM 3 Fall 2019 Dr. Alfer Cab Name SHOW ALL WORK, USING THE BACK...
PHYSICS 254 EXAM 3 Fall 2019 Dr. Alfer Cab Name SHOW ALL WORK, USING THE BACK OF A PAGE IF NECESSARY. DRAW A BOX AROUND THE FINAL ANSWER Pr e ther will the corr ere Manor select the awer which cro wn the won the who do not re calculations and you do A to show o n Please clinary Indian your wall 1) For each of the following variables, list the symbol used in equations to represent it and...
Multiple Choice. Select the best option. You do not need to show your work. S Two...
Multiple Choice. Select the best option. You do not need to show your work. S Two men, Joel and Jerry, push against a wall. Jerry stops after 10 min, while Joel can push for 5.0 min onger. Compare the work they do. A) Both men do positive work, but Joel does 75% more work than Jerry. B) Both men do positive work, but Joel does 50% more work than Jerry C) Both men do positive work, but Jerry does 50%...
Linear Momentum of an object is conserved At all times b. Only when the net external...
Linear Momentum of an object is conserved At all times b. Only when the net external force on the object is Zero When the net external torque on the object is Zero d. Never A truck of mass 4000 (kg) is moving at 10 (m/s). A car of mass 1000 (kg) is moving at 40 (m/s). So, the truck’s momentum, compared to the car, is Greater b. Smaller c. the same d. Cannot say without knowing their accelerations A 1000...
on a frictionless table collides with a stationary 7. A 10 kg ball moving at a...
on a frictionless table collides with a stationary 7. A 10 kg ball moving at a velocity of 2 m/s 5 kg ball. Find the final velocity of each ball if the collision is inelastic? If the collision is elastic and the 10 kg ball comes to a complete stop, what is the final velocity of the second ball? 8. A woman stands at the center of a platform. She is holding a dumb-bell in each hand, and outstretched. The...
Emmy the trapeze artist flies through the air with her arms and legs stretched out, tumbling head over heels. As she rotates, she pulls her arms and legs close to her chest, as shown in the illustration As Emmy pulls her arms and legs in, how does her rotational inertia change? It increases. It decreases. It remains constant As Emmy pulls her arms and legs in, how does her angular momentum change? It increases It decreases It remains constant As...
please help with question 4.
EXPERIMENT4: THE LINEAR AIR TRACK The aims of this experiment are to: 1)investigate momentum and energy conservation in coll 2. study the cooversion of energy for a body in free fall. There are two types of collisions, elastic and inelastic. In both types of collision momentum is between two bodies in one dimension. The velocity (and hemee the momentum) may be positive or ycorserved. A body of mass m moving with a velocity vi has...
Wilhelmina is an avid ice skater who is also taking physics with
her friend Darcy. Wilhelmina is having a discussion with Darcy and
is trying to relate her skating experience to the discussions in
class about rotational kinetic energy and angular momentum.
Darcy reminds Wilhelmina that the instantaneous angular momentum,
, of a particle
relative to an axis through an origin O is defined by the
cross product of the particle's instantaneous position vector
relative to O, , and its...
A 75-kg volleyball player performs a maximum-effort vertical jump with an initial velocity of 3 m/s. The player leaves the ground with an upright body position and also touches down with the same body position. Answer the following: ua A. How much will the player's center of mass (COM) travel in the air along the vertical direction during the ascending phase of the jump? Compute the maximum kinetic energy of the player during the jump. C. Compute the maximum potential...
PHYSICS 254 EXAM 3 Fall 2019 Dr. Alfer Cab Name SHOW ALL WORK, USING THE BACK OF A PAGE IF NECESSARY. DRAW A BOX AROUND THE FINAL ANSWER Pr e ther will the corr ere Manor select the awer which cro wn the won the who do not re calculations and you do A to show o n Please clinary Indian your wall 1) For each of the following variables, list the symbol used in equations to represent it and...
Multiple Choice. Select the best option. You do not need to show your work. S Two men, Joel and Jerry, push against a wall. Jerry stops after 10 min, while Joel can push for 5.0 min onger. Compare the work they do. A) Both men do positive work, but Joel does 75% more work than Jerry. B) Both men do positive work, but Joel does 50% more work than Jerry C) Both men do positive work, but Jerry does 50%...
on a frictionless table collides with a stationary 7. A 10 kg ball moving at a velocity of 2 m/s 5 kg ball. Find the final velocity of each ball if the collision is inelastic? If the collision is elastic and the 10 kg ball comes to a complete stop, what is the final velocity of the second ball? 8. A woman stands at the center of a platform. She is holding a dumb-bell in each hand, and outstretched. The...
Most questions answered within 3 hours.
-
At a certain temperature, the equilibrium constant, Kc, for this
reaction is 53.3.
H2(g)+I2(g)−⇀↽−2HI(g)Kc=53.3
At this...
asked 1 hour ago -
Question1 ) The STL provides similiar classes called stack and
queue, both of which gave functions...
asked 2 hours ago -
For Questions 1-4, assume you have 5 bits available:
1. For (positive) integers: What is the...
asked 2 hours ago -
convert grams into vloume with the density of water being at
.997514 g/cm^3 at 23.1 Celsuis...
asked 4 hours ago -
Foreman company obtained a $20,000, 6% loan on May 1, 2018.
Principal and interest will be...
asked 4 hours ago -
5. Problem 11.05 (Discounted Payback)
eBook
Project L costs $60,000, its expected cash inflows are $14,000
per...
asked 5 hours ago -
1. Which of the following is true about politics and health
organizations?
A. Health organizations are...
asked 5 hours ago -
A space vehicle is coasting at a constant velocity of 18.1 m/s
in the +y direction...
asked 6 hours ago -
5) Use the following balanced equation to answer questions
(a)-(i).
3 Cu(s) + 8 HNO3(aq) →...
asked 6 hours ago -
A three-year maturity bond with a 12% annual coupon rate is
currently traded at par $1000...
asked 6 hours ago -
1.
What is the minimum volume to use in the Spec 20 cuvette in order
to...
asked 7 hours ago -
A builder wants to install wall-to-wall carpeting in a living
room of length 8.87 m and...
asked 6 hours ago