Solution Found!
IP Responding to an alarm, a 102-kg fireman slides down a
Chapter 5, Problem 74GP(choose chapter or problem)
Problem 74GP
IP Responding to an alarm, a 102-kg fireman slides down a pole to the ground floor, 3.3 m below. The fireman starts at rest and lands with a speed of 4.2 m/s. (a) Find the average force exerted on the fireman by the pole. (b) If the landing speed is half that in part (a), is the average force exerted on the fireman by the pole doubled? Explain. (c) Find the average force exerted on the fireman by the pole when the landing speed is 2.1 m/s.
Questions & Answers
QUESTION:
Problem 74GP
IP Responding to an alarm, a 102-kg fireman slides down a pole to the ground floor, 3.3 m below. The fireman starts at rest and lands with a speed of 4.2 m/s. (a) Find the average force exerted on the fireman by the pole. (b) If the landing speed is half that in part (a), is the average force exerted on the fireman by the pole doubled? Explain. (c) Find the average force exerted on the fireman by the pole when the landing speed is 2.1 m/s.
ANSWER:
Solution 74GP
a.)
Step 1 of 7
We have to find the average force exerted on the fireman by the pole.
The average force exerted on the fireman by the pole can be found using the equation
Where,
is the sum of forces in
direction
is the mass of the fireman = 102 kg
is the acceleration of the fireman in ms2
is the force exerted on the fireman by the pole in N