Homework Help is Here – Start Your Trial Now!
Engineering
Civil Engineering
Homework 1- a worker with spikes on his shoes pulls with a constant horizontal force of magnitude 20 N on a box of mass 40 kg resting on the flat, frictionless surface of a frozen lake. What is the acceleration of the box ? 2- If we take east as x - axis and north as y- axis, then displacement = 20 °i +10°j. Find the magnitude of displacement. 3- A man walks on a straight road from his home to a market

Homework 1- a worker with spikes on his shoes pulls with a constant horizontal force of magnitude 20 N on a box of mass 40 kg resting on the flat, frictionless surface of a frozen lake. What is the acceleration of the box ? 2- If we take east as x - axis and north as y- axis, then displacement = 20 °i +10°j. Find the magnitude of displacement. 3- A man walks on a straight road from his home to a market

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
100%
Homework -1-20... -> Homework 1- a worker with spikes on his shoes pulls with a constant horizontal force of magnitude 20 N on a box of mass 40 kg resting on the flat, frictionless surface of a frozen lake. What is the acceleration of the box ? 2- If we take east as x – axis and north as y - axis, then displacement = 20 i +10j. Find the magnitude of displacement. 3- A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km/hr. Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km/hr. Find The average speed of the man over the interval of time o to 40 min. 4- The motion of a particle is described by the equation x = a + bt where a =15cm and b = 3cm. find the velocity at time 3 sec. 5- The displacement of the particle is given by y = a+ bt + ct dt'. Find the initial velocity and acceleration. 6- A particle is moving eastwards with velocity of 5 m/sec. In 10 sec the velocity changes to 5 m/sec northwards, What is the average acceleration and direction? V, = 5 m/sec VI=5 m/ sec 7- If a body having starts moving from rest with uniform acceleration 8 m/sec'. Find the velocity and distance travelled by it after 8 sec. 8- If a body is thrown up with the velocity of 15 m/sec. Find the maximum height and the distance after 4 sec. 9- A bowling ball of mass 7.5 kg travelling at 10 m secrolls off a horizontal table 1 m high. (Assume the acceleration due to gravity is 10 m sec, and the effects of air resistance may be ignored unless otherwise stated.) a Calculate the ball's horizontal velocity just as it strikes the floor. b What is the vertical velocity of the ball as it strikes the floor? c Calculate the velocity of the ball as it reaches the floor. d What time interval has elapsed between the ball leaving the table and striking the floor? e Calculate the horizontal distance travelled by the ball as it falls. II
Transcribed Image Text:Homework -1-20... -> Homework 1- a worker with spikes on his shoes pulls with a constant horizontal force of magnitude 20 N on a box of mass 40 kg resting on the flat, frictionless surface of a frozen lake. What is the acceleration of the box ? 2- If we take east as x – axis and north as y - axis, then displacement = 20 i +10j. Find the magnitude of displacement. 3- A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km/hr. Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km/hr. Find The average speed of the man over the interval of time o to 40 min. 4- The motion of a particle is described by the equation x = a + bt where a =15cm and b = 3cm. find the velocity at time 3 sec. 5- The displacement of the particle is given by y = a+ bt + ct dt'. Find the initial velocity and acceleration. 6- A particle is moving eastwards with velocity of 5 m/sec. In 10 sec the velocity changes to 5 m/sec northwards, What is the average acceleration and direction? V, = 5 m/sec VI=5 m/ sec 7- If a body having starts moving from rest with uniform acceleration 8 m/sec'. Find the velocity and distance travelled by it after 8 sec. 8- If a body is thrown up with the velocity of 15 m/sec. Find the maximum height and the distance after 4 sec. 9- A bowling ball of mass 7.5 kg travelling at 10 m secrolls off a horizontal table 1 m high. (Assume the acceleration due to gravity is 10 m sec, and the effects of air resistance may be ignored unless otherwise stated.) a Calculate the ball's horizontal velocity just as it strikes the floor. b What is the vertical velocity of the ball as it strikes the floor? c Calculate the velocity of the ball as it reaches the floor. d What time interval has elapsed between the ball leaving the table and striking the floor? e Calculate the horizontal distance travelled by the ball as it falls. II
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Heating, ventilation and air-conditioning
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Structural Analysis
Structural Analysis
Civil Engineering
ISBN:
9781337630931
Author:
KASSIMALI, Aslam.
Publisher:
Cengage,
Structural Analysis (10th Edition)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Sustainable Energy
Sustainable Energy
Civil Engineering
ISBN:
9781337551663
Author:
DUNLAP, Richard A.
Publisher:
Cengage,
Traffic and Highway Engineering
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS