Homework -1-20...->Homework1- a worker with spikes on his shoes pulls with a constanthorizontal force of magnitude 20 N on a box of mass 40 kgresting on the flat, frictionless surface of a frozen lake. Whatis the acceleration of the box ?2- If we take east as x – axis and north as y - axis, thendisplacement = 20 i +10j. Find the magnitude of displacement.3- A man walks on a straight road from his home to a market2.5 km away with a speed of 5 km/hr. Finding the marketclosed, he instantly turns and walks back home with a speedof 7.5 km/hr. Find The average speed of the man over theinterval 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 3sec.5- The displacement of the particle is given by y = a+ bt + ctdt'. Find the initial velocity and acceleration.6- A particle is moving eastwards with velocity of 5 m/sec. In10 sec the velocity changes to 5 m/sec northwards, What isthe average acceleration and direction?V, = 5 m/secVI=5 m/ sec7- If a body having starts moving from rest with uniformacceleration 8 m/sec'. Find the velocity and distance travelledby it after 8 sec.8- If a body is thrown up with the velocity of 15 m/sec. Find themaximum height and the distance after 4 sec.9- A bowling ball of mass 7.5 kg travelling at 10 m secrolls off ahorizontal table 1 m high. (Assume the acceleration due to gravity is10 m sec, and the effects of air resistance may be ignored unlessotherwise 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 tableand striking the floor?e Calculate the horizontal distance travelled by the ball as it falls.II

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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

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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