A man with a box on his head is climbing up a ladder. The work done by the man on the box is
Positive
Negative
Zero
Undefined
A
Positive
B
Undefined
C
Negative
D
Zero
Open in App
Solution
Verified by Toppr
The correct option is A Positive
The man carries the box up above to a higher altitude. The potential energy of the box increases. This increase in energy comes from the work done by the man. Hence the work done is positive.
The displacement of the box is in the direction of force exerted by the man on the box - upwards. Hence, the product of the force and displacement is positive. Hence the work is positive.
Was this answer helpful?
5
Similar Questions
Q1
A man with a box on his head is climbing up a ladder. The work done by the man on the box is
View Solution
Q2
A man with a box on his head is climbing up a ladder. What work is said to be done by the man on the box?
View Solution
Q3
A 50kg man with 20kg load on his head climbs up 20 steps of 0.25m height each. The minimum work done by the man on the block during climbing is
View Solution
Q4
A 50kg man with 20kg load on his head climbs up 20 steps of 0.25m height each. The work done by the man on the block during climbing is
View Solution
Q5
A man having a box on his head, climbs up a slope and another man having an identical box walks the same distance on a levelled road. Who does more work against the force of gravity and why?