Solution Found!
Answer: A worker wants to turn over a uniform, 1250-N,
Chapter 11, Problem 69P(choose chapter or problem)
A worker wants to turn over a uniform, 1250-N, rectangular crate by pulling at \(53.0^{\circ}\) on one of its vertical sides (Fig. P11.69). The floor is rough enough to prevent the crate from slipping. (a) What pull is needed to just start the crate to tip? (b) How hard does the floor push upward on the crate? (c) Find the friction force on the crate. (d) What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor?
Equation Transcription:
°
°
Text Transcription:
53.0^\circ
2.20 m
53.0^\circ
1.50 m
Questions & Answers
QUESTION:
A worker wants to turn over a uniform, 1250-N, rectangular crate by pulling at \(53.0^{\circ}\) on one of its vertical sides (Fig. P11.69). The floor is rough enough to prevent the crate from slipping. (a) What pull is needed to just start the crate to tip? (b) How hard does the floor push upward on the crate? (c) Find the friction force on the crate. (d) What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor?
Equation Transcription:
°
°
Text Transcription:
53.0^\circ
2.20 m
53.0^\circ
1.50 m
ANSWER:
Solution 69P
We first need to calculate the pulling force on the crate. Then we can proceed to find the normal force exerted by the floor, the friction force and the coefficient of kinetic friction.
Let us have a look at the following figure to understand the situation better.