Problem-solving questionsAt the back of the leg, two muscles pull on the Achilles tendon to create an upward force.Estimate the nett force if cach muscle has a diameter of about 5.0 mm and exerts a force in adirection of 25° from the vertical. (Use a force per unit area of muscle of 7x10° N/m²).An 18 kg penguin slides down an iceberg at an angle of 15° to the horizontal. Frictionbetween the penguin's body and the ice surface is negligible. Determine the normal forceacting on the penguin and its acceleration down the iceberg.A manufacturer of children's slides does some tests and discovers that the slope of a slipperyslide must be at least 25° to the horizontal for the slide to work. The child involved in doingthe testing weighs 35 kg. What is the coefficient of static friction between the child and theslide?A car drives onto a section of the road which is covered in ice. The driver attempts to stop byhitting the brakes but the wheels lock and the car skids for another 60 m. Determine thecoefficient of kinetic friction between the wheels and the ice if the initial speed of the car was40 km/hr.

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At the back of the leg, two muscles pull on the Achilles tendon to create an upward force. Estimate the nett force if cach muscle has a diameter of about 5.0 mm and exerts a force in a direction of 25° from the vertical. (Use a force per unit area of muscle of 7x10° N/m²).

At the back of the leg, two muscles pull on the Achilles tendon to create an upward force. Estimate the nett force if cach muscle has a diameter of about 5.0 mm and exerts a force in a direction of 25° from the vertical. (Use a force per unit area of muscle of 7x10° N/m²).

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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