Home
Class 9
PHYSICS
A boy pushes a book kept on a table byap...

A boy pushes a book kept on a table byapplying a force of 4.5 N. Find the work done by the force if the book is displaced through 30 cm along the direction of push.

Text Solution

Verified by Experts

Force applied on the book (F) = 4.5 N
Displacement (s) = 30 cm = (30/100) m
= 0.3 m
Work done, `W = FS`
` = 4.5 xx 0.3`
`1.35` J
Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    NCERT GUJARATI|Exercise Let us Improve our learning (Reflections on concepts)|5 Videos
  • WORK AND ENERGY

    NCERT GUJARATI|Exercise Let us Improve our learning (Application of concepts)|6 Videos
  • SOUND

    NCERT GUJARATI|Exercise Let us Improve our learning (Multiple choice questions)|5 Videos

Similar Questions

Explore conceptually related problems

A body is displaced by 2m in Z - direction by a force (-4,2,6)N . Find the work done ……….

If the work done on an object is 10 J and the object is displaced through 2 m, then what is the force applied?

A person pushes a box kept on a horizontal surface with force of 100 N .In unit vector natation force can be expressed as:

Write an expression for the work done when a force is acting on an object in the direction of its displacement.

A body of mass 2 kg is kept on a rough horizontal surface as shown in the figure. Find the work done by frictional force in the interval t=0 to t=5 sec

A body of mass 2 kg is rest on a smooth horizontal surface . When a horizontal force of 0.5 N acts on this bofy it is displaced in the direction of the force . Find the work done by the force in 8.0 s .Show that this work is equal to the change in kinetic energy of the body .

A body constrained to move along the z -axis of a coordinate system is subject to a constant force F given by vec(F) =(-hat(i)+2hat(j)+3hat(k))N where hat(i),hat(j),hat(k) are unit vectors along the x, y and z-axis of the system respectively . What is the work done by this force in moving the body a distance of 4 m along the z- axis?

A body constrained to move along the z-axis of a coordinate system is subject to a constant force F given by F= -hati+2hatj+3hatk N where hati, hatj, hatk are unit vectors along the x-, y- and z-axis of the system respectively. What is the work done by this force in moving the body a distance of 4m along the z-axis?