CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Efficiency of Machines

Give a reason...

Question

Give a reason why a boy with his heavy bag waiting at bus stop does no work.

Open in App

Solution

A work is said to be done when a force causes a displacement in its direction. In this case, there is no displacement. Hence, no work is done.
Mathematically, $W o r k = F o r c e x d i s p l a c e m e n t$
When displacement is zero, $W o r k = F o r c e x 0 W o r k = 0 J o u l e$

Suggest Corrections

thumbs-up

5

Similar questions

Q. Rain is falling vertically with a speed of 35 m/s. Winds start blowing after sometime with a speed of 12m/s in east to west direction. In which direction should a boy waiting at a bus stop hold his umbrella ?

Q. Rain is falling vertically with a speed of

20 m / s

. After sometime wind starts blowing with a speed of

12 m / s

in east to west direction in which direction should a boy waiting at a bus stop hold his umbrella.

Q. Rain is falling vertically with a speed of

35

m s^{- 1}

. Winds starts blowing after sometime with a speed of

12

m s^{- 1}

in east to west direction. In which direction should a boy waiting at a bus stop hold his umbrella?

Q. Rain is falling vertically with a speed of 35

m s^{- 1}

. Winds starts blowing after sometime with a speed of 12

m s^{- 1}

in east to west direction. At what angle with the vertical should a boy waiting at a bus stop hold his umbrella to protect himself from rain?

Q. A person standing with a heavy load on his head does no work.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Efficiency of machines

PHYSICS

Watch in App

explore_more_icon

Explore more

Efficiency of Machines

Standard X Physics

Join BYJU'S Learning Program

CrossIcon