A rigid body of mass $m$ kg is lifted uniformly by a man to a height of one metre in $30$ sec. Another man lifts the same mass to the same height in $60$ sec. The work done on the body against gravitation in both the cases are in ratio:

1 : 2

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

1 : 1

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

2 : 1

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

4 : 1

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

Open in App

Solution

The correct option is B 1 : 1
$W = F . S$
As work done is independent of time. So, both the man does same work.
Hence, the work done on the body against gravitation are in ratio $1 : 1$ .

Suggest Corrections

Similar questions

Q. A body of mass m kg is lifted by a man to a height of one metre in 30 sec. Another man lifts the same mass to the same height in 60 sec. The work done by them(approximately) are in the ratio

A body of mass m kg is lifted by a man to a height of one metre in 30 sec. Another man lifts the same mass to the same height in 60 sec. The work done by them are in the ratio

Q. A body of mass

m

kg is lifted by a man to a height of one meter in

30

sec. Another man lifts the same mass to the same height in

60

sec, calculate the ratio of the work done by the two men.

Q. A rigid body of mass

m kg

is lifted with uniform velocity by a man to a height of

1 m

30 seconds

. Another man lifts the same mass with uniform velocity to the same height in

60 seconds

. The work done on the body against gravity by them are in the ratio

Q. A rigid body of mass

m kg

is lifted with uniform velocity by a man to a height of

1 m

30 seconds

. Another man lifts the same mass with uniform velocity to the same height in

60 seconds

. The work done on the body against gravity by them are in the ratio

Join BYJU'S Learning Program

A rigid body of mass m kg is lifted uniformly by a man to a height of one metre in 30 sec. Another man lifts the same mass to the same height in 60 sec. The work done on the body against gravitation in both the cases are in ratio:

The correct option is B 1 : 1W=F.SAs work done is independent of time. So, both the man does same work.Hence, the work done on the body against gravitation are in ratio 1:1.

A rigid body of mass $m$ kg is lifted uniformly by a man to a height of one metre in $30$ sec. Another man lifts the same mass to the same height in $60$ sec. The work done on the body against gravitation in both the cases are in ratio:

The correct option is B 1 : 1
$W = F . S$
As work done is independent of time. So, both the man does same work.
Hence, the work done on the body against gravitation are in ratio $1 : 1$ .