A child starts sledding from rest, going down a 40 m long 7.5° incline, then coasting across a horizontal stretch. The mass of the sled + child is 35 kg, and the coefficient of kinetic friction is 0.060. a. Make force diagrams for the sled + child on both the hill and the horizontal stretch. b. Resolve the weight of the sled + child along and perpendicular to the plane. c. Determine the reaction force on the sled + child. d. Determine the speed of the sled + child at the bottom of the incline. e. How far along the horizontal stretch does the sled + child travel before stopping? f. What is the total time for the ride? g. Determine how much energy that is transferred to thermal energy. h. Determine how much work is done on the sled + child by the gravitational force while the child + sled is moving along the incline. i. By considering the energy of the system and energy transformations, determine the speed of the sled + child at the bottom of the incline. Does your answer agree with part d?
A child starts sledding from rest, going down a 40 m long 7.5° incline, then coasting across a horizontal stretch. The mass of the sled + child is 35 kg, and the coefficient of kinetic friction is 0.060. a. Make force diagrams for the sled + child on both the hill and the horizontal stretch. b. Resolve the weight of the sled + child along and perpendicular to the plane. c. Determine the reaction force on the sled + child. d. Determine the speed of the sled + child at the bottom of the incline. e. How far along the horizontal stretch does the sled + child travel before stopping? f. What is the total time for the ride? g. Determine how much energy that is transferred to thermal energy. h. Determine how much work is done on the sled + child by the gravitational force while the child + sled is moving along the incline. i. By considering the energy of the system and energy transformations, determine the speed of the sled + child at the bottom of the incline. Does your answer agree with part d?
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter4: Coplanar Equilibrium Analysis
Section: Chapter Questions
Problem 4.10P: Draw the FBD of the entire frame, assuming that friction and the weights of the members are...
Related questions
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps with 2 images
Recommended textbooks for you
International Edition---engineering Mechanics: St…
Mechanical Engineering
ISBN:
9781305501607
Author:
Andrew Pytel And Jaan Kiusalaas
Publisher:
CENGAGE L
International Edition---engineering Mechanics: St…
Mechanical Engineering
ISBN:
9781305501607
Author:
Andrew Pytel And Jaan Kiusalaas
Publisher:
CENGAGE L