Physics

A 55 kg ice skater, initially at rest on a flat skating rink, requires a 198 N horizontal force to be set in motion. However, after the skater is in motion, a horizontal force of 175 N keeps her moving at a constant velocity. Find the coefficients of static and kinetic friction between the skates and the ice.

When motion is started, the applied force = (static friction coeff.) x (weight)
Use that relationship to get the static friction coefficient, and remember then weight = m g

When the skater is moving at constant speed, a similar relation applies
force = (kinetic friction coeff.) x (weight)

  1. 👍 0
  2. 👎 0
  3. 👁 191
  1. the skaters crash into each other and blow up and die

    1. 👍 0
    2. 👎 0
  2. boy dinner is ready stop skating and come home!!!

    1. 👍 0
    2. 👎 0
    posted by urmama
  3. sorry i really hate physics now since i cant solve this question


    Sincerely,
    urmama, idontknow

    1. 👍 1
    2. 👎 0
  4. Loser

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. 12th Physics

    A 55 kg ice skater is at rest on a flat skating rink. A 198 N horizontal forceis needed to set the skater in motion.However, after the skater is inmotion, a horizontal force of 175 N keeps the skater moving at a constantvelocity.

    asked by Melissa on December 8, 2009
  2. Physics

    A 63-kg ice-skater glides with a speed of 10 m/s toward a 14-kg sled at rest on the ice. The ice-skater reaches the sled and holds on to it. The ice-skater and the sled then continue sliding in the same direction in which the

    asked by Emily on March 22, 2016
  3. Physics

    At the centre of a circular ice rink, a 87.0 kg ice skater moving 2.10 m/s north hits and grabs onto a 51.0 kg ice skater who had been traveling west at 5.35 m/s. If the skaters hold onto each other and the rink has a 26.0 m

    asked by HELP ME!!!!!! on November 14, 2016
  4. Physics

    At the centre of a circular ice rink, a 67.0 kg ice skater moving 2.00 m/s north hits and grabs onto a 41.0 kg ice skater who had been traveling west at 4.30 m/s. If the skaters hold onto each other and the rink has a 42.0 m

    asked by Can you do this ? on November 14, 2016
  5. physics

    A 63-kg ice-skater glides with a speed of 10 m/s toward a 14-kg sled at rest on the ice. The ice-skater reaches the sled and holds on to it. The ice-skater and the sled then continue sliding in the same direction in which the

    asked by kevin on March 30, 2011
  6. physics

    Two ice skaters stand at rest in the center of an ice rink. When they push off against one another the 61 kg skater acquires a speed of 0.60 m/s.If the speed of the other skater is 0.90 m/s, what is this skater's mass?

    asked by emma on February 2, 2011
  7. Physics

    Two ice skaters stand at rest in the center of an ice rink. When they push off against one another the 61-kg skater acquires a speed of 0.63 m/s . If the speed of the other skater is 0.86 m/s , what is this skater's mass?

    asked by Amanda on December 2, 2015
  8. Physics

    Two ice skaters stand at rest in the center of an ice rink. When they push off against one another the 61-kg skater acquires a speed of 0.63 m/s . If the speed of the other skater is 0.86 m/s , what is this skater's mass?

    asked by Amanda on December 3, 2015
  9. physics 2!!**

    Two ice skaters stand at rest in the center of an ice rink. When they push off against one another the 45 kg skater acquires a speed of 0.71 m/s. If the speed of the other skater is 0.84 m/s, what is this skater's mass?

    asked by kelsey on October 12, 2008
  10. Physics

    Two ice skaters stand at rest in the center of an ice rink. When they push off against one another the 61-kg skater acquires a speed of 0.63 m/s. If the speed of the other skater is 0.86 m/s, what is this skater's mass?

    asked by Amanda on December 2, 2015

More Similar Questions