wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A block of mass 5 kg is sliding on a smooth floor with a velocity of 20 ms1. The amount of work required to stop it is:


A

negative

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B

equal to the potential energy of the block

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

equal to the kinetic energy of the block

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

positive

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C

equal to the kinetic energy of the block


The work done to stop the block would be negative as the force applied would be opposite to the direction of motion so as to stop the moving block. Since the body possesses only kinetic energy (due to its motion) and no potential energy (as there is no mention of its position, so we assume it to be at ground level), the work required to stop the block will be equal to its kinetic energy.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Work Done
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon