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A 240-kg beam 2.2 m in length slides broadside down the ice with a speed of...
NEED ASAP question b A 200-kg beam 2.5 m in length slides broadside down the ice with a speed of 18 m/s A 65-kg man at...
NEED ASAP
question b
A 200-kg beam 2.5 m in length slides broadside down the ice with a speed of 18 m/s A 65-kg man at rest grabs one end as it goes past and hangs on as both he and the beam go spinning down the ice. Assume frictionless motion. (Figure 1) Part A How fast does the center of mass of the system move after the collision? Express your answer using two significant figures. v= 14 m/s Submit...
Constants Periodic significant figures than required for this part. A 250-kg beam 2.9 ini in length...
Constants Periodic significant figures than required for this part. A 250-kg beam 2.9 ini in length slides broadside down the ice with a speed of 23 in/s. A 60-kg man at rest grabs one end as it goes past and hangs on as both he and the beam go spinning down the ice. Assume frictionless motion. (Figure 1) Part B With what angular velocity does the system rotate about its cm? Express your answer using two significant figures. Figure 1...
An ice skater of mass m = 60 kg coasts at a speed of v = 0.71 m/s past a pole
Darcy and Wilhelmina now tackle a homework problem. An ice skater of mass m = 60 kg coasts at a speed of v = 0.71 m/s past a pole. At the distance of closest approach, her center of mass is r1= 0.37 m from the pole. At that point she grabs hold of the pole. (A) What is the skater's angular speed when she first grabs the pole? _______ rad/s (B) What is the skater's angular speed after she now pulls her center of...
A disk of mass m, = 70.0 g and radius r , = 4.50 cm slides...
A disk of mass m, = 70.0 g and radius r , = 4.50 cm slides on a frictionless sheet of ice with velocity v, where v = 12.00 m/s, as shown in a top-down view in figure (a) below. The edge of this disk just grazes the edge of a second disk in a glancing blow. The second disk has a mass m2 = 140 g, a radius r2 = 6.00 cm, and is initially at rest. As the...
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 44 kg block of ice slides down a frictionless incline 1.5 m long and 0.82...
A 44 kg block of ice slides down a frictionless incline 1.5 m long and 0.82 m high. A worker pushes up against the ice, parallel to the incline, so that the block slides down at constant speed. (a) Find the magnitude of the worker's force. N How much work is done on the block by the following forces? (Include the sign of the value in your answer.) (b) the worker's force J (c) the gravitational force on the block...
A 50 kg block of ice slides down an incline 2 m long and 1 m...
A 50 kg block of ice slides down an incline 2 m long and 1 m high. A worker pushes up on the ice parallel to the incline so that it slides down at constant speed. The coefficient of kinetic friction between the ice and the incline is 0.1. Find (a) the force exerted by the worker, (b) the work done by the worker on the block of ice, and (c) the work done by gravity on the ice.
If an ice skater has a rotational inertia of 100 kg*m^(2)while spinning with an angular velocity...
If an ice skater has a rotational inertia of 100 kg*m^(2)while spinning with an angular velocity of 2 rad/s, what is the ice skaters angular velocity if she changes her rotational inertia to 50 kg*m^(2)?
4. An ice skater with rotational inertia I = 0.23 kg*m* is spinning with angular speed...
4. An ice skater with rotational inertia I = 0.23 kg*m* is spinning with angular speed w. They pull their arms in, increasing their angular speed to 4w. What is the final moment of inertia?
A large sledge of mass 1000 kg slides down a frictionless ice ramp that has length...
A large sledge of mass 1000 kg slides down a frictionless ice ramp that has length ` and an angle of incline θ. (a) Write expressions as functions of θ for i. the acceleration a of the sledge while it is on the ramp ii. the time t for the sled to reach the bottom of the ramp iii. the final speed v of the sled at the bottom of the ramp (b) Assuming the ramp length is ` =...
NEED ASAP
question b
A 200-kg beam 2.5 m in length slides broadside down the ice with a speed of 18 m/s A 65-kg man at rest grabs one end as it goes past and hangs on as both he and the beam go spinning down the ice. Assume frictionless motion. (Figure 1) Part A How fast does the center of mass of the system move after the collision? Express your answer using two significant figures. v= 14 m/s Submit...
Constants Periodic significant figures than required for this part. A 250-kg beam 2.9 ini in length slides broadside down the ice with a speed of 23 in/s. A 60-kg man at rest grabs one end as it goes past and hangs on as both he and the beam go spinning down the ice. Assume frictionless motion. (Figure 1) Part B With what angular velocity does the system rotate about its cm? Express your answer using two significant figures. Figure 1...
A disk of mass m, = 70.0 g and radius r , = 4.50 cm slides on a frictionless sheet of ice with velocity v, where v = 12.00 m/s, as shown in a top-down view in figure (a) below. The edge of this disk just grazes the edge of a second disk in a glancing blow. The second disk has a mass m2 = 140 g, a radius r2 = 6.00 cm, and is initially at rest. As the...
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 50 kg block of ice slides down an incline 2 m long and 1 m high. A worker pushes up on the ice parallel to the incline so that it slides down at constant speed. The coefficient of kinetic friction between the ice and the incline is 0.1. Find (a) the force exerted by the worker, (b) the work done by the worker on the block of ice, and (c) the work done by gravity on the ice.
4. An ice skater with rotational inertia I = 0.23 kg*m* is spinning with angular speed w. They pull their arms in, increasing their angular speed to 4w. What is the final moment of inertia?
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