Question

In: Physics

A 45 kg skater rounds a 4.5 m -radius turn at 6.6 m/s .What is the...

A 45 kg skater rounds a 4.5 m -radius turn at 6.6 m/s .What is the horizontal component of the force the ice exerts on her skate blades ? What is the vertical component of the force the ice exerts on her skate blades?At what angle can she lean without falling over?

Solutions

Expert Solution


Related Solutions

A 45 kg figure skater is spinning on the toes of her skates at 1.0 rev/s...
A 45 kg figure skater is spinning on the toes of her skates at 1.0 rev/s . Her arms are outstretched as far as they will go. In this orientation, the skater can be modeled as a cylindrical torso (40 kg , 20 cm average diameter, 160 cm tall) plus two rod-like arms (2.5 kg each, 69 cm long) attached to the outside of the torso. The skater then raises her arms straight above her head, where she appears to...
A 45 kg figure skater is spinning on the toes of her skates at 0.50 rev/s...
A 45 kg figure skater is spinning on the toes of her skates at 0.50 rev/s . Her arms are outstretched as far as they will go. In this orientation, the skater can be modeled as a cylindrical torso (40 kg , 20 cm average diameter, 160 cm tall) plus two rod-like arms (2.5 kg each, 62 cm long) attached to the outside of the torso. The skater then raises her arms straight above her head, where she appears to...
A torsion pendulum is made from a disk of mass m = 6.6 kg and radius...
A torsion pendulum is made from a disk of mass m = 6.6 kg and radius R = 0.66 m. A force of F = 44.8 N exerted on the edge of the disk rotates the disk 1/4 of a revolution from equilibrium 1)What is the torsion constant of this pendulum? 2)What is the minimum torque needed to rotate the pendulum a full revolution from equilibrium? 3)What is the angular frequency of oscillation of this torsion pendulum? 4)Which of the...
3. Two ice skaters collide on the ice. A 39.6-kg skater moving South at 6.21 m/s...
3. Two ice skaters collide on the ice. A 39.6-kg skater moving South at 6.21 m/s collides with a 52.1-kg skater moving East at 4.33 m/s. The two skaters entangle and move together across the ice. Determine the magnitude and direction of their post-collision velocity (answer: 3.64 m/s at 42.5 degrees) Please provide a detailed diagram
A skater glides along a circular path of radius 7.40 m. 1-If he coasts around one...
A skater glides along a circular path of radius 7.40 m. 1-If he coasts around one half of the circle, find the magnitude of the displacement vector. 2-What distance has the person skated? 3-If the skater coasts only around 73 degrees of the circle, find the magnitude of his displacement vector. 4-What distance has he skated in this case? 5-What is the magnitude of the displacement if he skates all the way around the circle?
What is the smallest number of whole logs (density = 735 kg/m³, radius = 0.077 m,...
What is the smallest number of whole logs (density = 735 kg/m³, radius = 0.077 m, length = 2.91 m) that can be used to build a raft that will carry 3 people, each of whom has a mass of 76.0 kg?
What is the smallest number of whole logs (density = 695 kg/m³, radius = 0.073 m,...
What is the smallest number of whole logs (density = 695 kg/m³, radius = 0.073 m, length = 2.73 m) that can be used to build a raft that will carry 6 people, each of whom has a mass of 87.5 kg?
4. A 14000N car traveling at 25m/s rounds a curve of radius 200m. Find the following:...
4. A 14000N car traveling at 25m/s rounds a curve of radius 200m. Find the following: a. The centripetal acceleration of the car.    b. The force that maintains centripetal acceleration. c. The minimum coefficient of static friction between the tires and road that will allow the car to round the curve safely.
3. ​ ​Induced Emf ​A circular coil of radius 0.11 m contains a single turn and...
3. ​ ​Induced Emf ​A circular coil of radius 0.11 m contains a single turn and is located in a constant magnetic field of magnitude 0.27 T. The magnetic field has the same direction as the normal to the plane of the coil. The radius increases to 0.30 m in a time of 0.080 s. (a) Determine the magnitude of the emf induced in the coil. (b) The coil has a resistance of 0.70 ?. Find the magnitude of the...
A four-turn circular wire coil of radius 0.550 m lies in a plane perpendicular to a...
A four-turn circular wire coil of radius 0.550 m lies in a plane perpendicular to a uniform magnetic field of magnitude 0.355 T. If the wire is reshaped from a four-turn circle to a two-turn circle in 0.128 s (while remaining in the same plane), what is the average induced emf in the wire during this time?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT