Book edition 10th Edition

Author(s) David Halliday

Pages 1328 pages

ISBN 9781118230718

Answers without the blur.

Just sign up for free and you're in.

Short Answer

A block with a weight of 3.0 N is at rest on a horizontal surface. A 1.0 N upward force is applied to the block by means of an attached vertical string. (a) What is the magnitude and (b) What is the direction of the force of the block on the horizontal surface?

(a) 2.0 N is the magnitude of the force exerted by the block on the horizontal surface

(b) The direction of the force exerted by the block on the horizontal surface is downwards.

See the step by step solution

Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step 1: The given data

Weight of block, W=3.0 N .
Upward force applied to the block, $F_{v e r t i c a l} = 1.0 N$ .

Step 2: Understanding the concept of force in the free body diagram

The free-body diagram often referred to as FBD, represents all the forces acting on the body along with the directions. The diagram gives the general idea of net forces on the body.

Here, the vertical forces acting on the block are - the weight of the block, the pushing force of the horizontal surface to the block, and the pulling force of the vertical string. Using all these forces, we can find the required force.

Formula:

Since, the total forces acting on the body is balanced in the given direction,

${\sum F = 0}_{}^{}$ (i)

Step 3: (a) Calculation of the magnitude of the force

Free Body Diagram of the Block

(from equation (i) and the body diagram)

$(\begin{matrix} Vertical force by \\ means of string \end{matrix}) + (\begin{matrix} Pushing force by horizontal \\ surface on block \end{matrix}) - (\begin{matrix} Weight of \\ block \end{matrix}) = 0 (\begin{matrix} Pushing force by horizontal \\ surface on block \end{matrix}) = 3.0 N - 1.0 N = 2.0 N$

Using Newton’s third law, the force exerted by the block on the surface has the same magnitude so,

Force exerted by the block on the horizontal surface $= 2.0 N$ .

Hence, the value of force is $2.0 N$

Step 4: (b) Finding the direction of the normal force

From the above calculations and the free body diagram, it can be seen that the force exerted by the block on the horizontal surface is in the downward direction.

Find Study Materials for

Create Study Materials

Select your language

Fundamentals Of Physics

Answers without the blur.

Short Answer

A block with a weight of 3.0 N is at rest on a horizontal surface. A 1.0 N upward force is applied to the block by means of an attached vertical string. (a) What is the magnitude and (b) What is the direction of the force of the block on the horizontal surface?

Step by Step Solution

Step 1: The given data

Step 2: Understanding the concept of force in the free body diagram

Step 3: (a) Calculation of the magnitude of the force

Step 4: (b) Finding the direction of the normal force

Most popular questions for Physics Textbooks

Want to see more solutions like these?

Recommended explanations on Physics Textbooks

Select your language

Fundamentals Of Physics

Answers without the blur.

Short Answer

A block with a weight of 3.0 N is at rest on a horizontal surface. A 1.0 N upward force is applied to the block by means of an attached vertical string. (a) What is the magnitude and (b) What is the direction of the force of the block on the horizontal surface?

Step by Step Solution

Step 1: The given data

Step 2: Understanding the concept of force in the free body diagram

Step 3: (a) Calculation of the magnitude of the force

Step 4: (b) Finding the direction of the normal force

Most popular questions for Physics Textbooks

Want to see more solutions like these?

Recommended explanations on Physics Textbooks

Work Energy and Power

Radiation

Astrophysics

Physics of Motion

Scientific Method Physics

Fluids

Torque and Rotational Motion

Nuclear Physics

Fields in Physics

Measurements

Space Physics

Electricity

Physical Quantities and Units

Medical Physics

Electrostatics

Further Mechanics and Thermal Physics

Mechanics and Materials

Engineering Physics

Energy Physics

Force

Particle Model of Matter

Waves Physics

Magnetism

Modern Physics

Atoms and Radioactivity

Dynamics

Electricity and Magnetism

Conservation of Energy and Momentum

Fundamentals of Physics

Kinematics Physics

Circular Motion and Gravitation

Linear Momentum

Rotational Dynamics

Oscillations

Translational Dynamics

Geometrical and Physical Optics

Thermodynamics

Magnetism and Electromagnetic Induction

Electromagnetism

Electric Charge Field and Potential

Turning Points in Physics