A 50kg man with 20 kg load on his head c...

A 50kg man with 20 kg load on his head climbs up 20 steps of 0.25 m height each. The work done in climbing is

A

5 J

B

350 J

C

100 J

D

3430 J

Text Solution

Verified by Experts

The correct Answer is:

D

Total mass `= (50+20)=70` kg
Total height `= 20xx0.25 = 5m`
`therefore` Work done `= mgh = 70xx9.8xx5=3430 J`

Promotional Banner

Promotional Banner

Topper's Solved these Questions

WORK , ENERGY , POWER AND COLLISION
ERRORLESS |Exercise Ordinary Thinking (Objective Questions) (Work Done by Variable Force)|26 Videos
WORK , ENERGY , POWER AND COLLISION
ERRORLESS |Exercise Ordinary Thinking (Objective Questions) (Conservation of Energy and Momentum)|87 Videos
WAVES AND SOUND
ERRORLESS |Exercise SET|25 Videos
WORK, ENERGY, POWER & COLLISION
ERRORLESS |Exercise Assertion|30 Videos

Similar Questions

Explore conceptually related problems

A man weighing 80 kg climbs a staircase carrying a 20 kg load. The staircase has 40 steps, each of 25 cm height. If he takes 20 seconds to climb, the work done is

A man weighing 60 kg climbs up a staircase carrying a load of 20 kg on his head. The stair case has 20 steps each of height 0.2 m. If he takes 10 s to climb find his power

A man carries a load on his head through a distance of 5 m. The maximum amount of work is done when he

A person of mass 50 kg climbs a tower of height 72 metre. The work done is [g = 9.8 m//s^(2)]

A person holds a bucket of weight 60N . He walks 7m along the horizontal path and then climbs up a vertical distance of 5m. The work done by the man is

A person holds a bucket of weight 60 N. He walks 7 m along the horizontal path and then climbs up a vertical distance of 5 m. The work done by the man is

A man weighing 60 kg climbs a staircase carrying a 20 kg load on his hand. The staircase has 20 steps and each step has a height of 20 cm. If he takes 20 second to climb, his power is :

ERRORLESS -WORK , ENERGY , POWER AND COLLISION-Self Evaluation Test

A 50kg man with 20 kg load on his head climbs up 20 steps of 0.25 m he...
Text Solution
|
How much work does a putting force of 40 N do on the 20 kg box in pull...
Text Solution
|
A horizontal force of 5 N is required to maintain a velocity of 2 m / ...
Text Solution
|
Work done in time t on a body of mass m which is accelerated from rest...
Text Solution
|
What is the shape of the graph between the speed and kinetic energy of...
Text Solution
|
When a body moves with some friction on a surface
Text Solution
|
A bullet of mass m moving with velocity upsilon(1) strikes a suspended...
Text Solution
|
There will be decrease in potential energy of the system, if work is d...
Text Solution
|
The slope of kinetic energy displacement curve of a particle in motion...
Text Solution
|
The energy required to accelerate a car from 10 m/s to 20 m / s is how...
Text Solution
|
A body of mass 2 kg slides down a curved track which is quadrant of a ...
Text Solution
|
The kinetic energy of a body decreases by 36% the decrease in its mome...
Text Solution
|
A bomb of mass 3 m kg explodes into two pieces of mass m kg and m kg ...
Text Solution
|
Which one of the following statement does not hold good when two balls...
Text Solution
|
A neutron travelling with a velocity v and kinetic energy E collides p...
Text Solution
|
A body of mass m(1) moving with uniform velocity of 40 m/s collides w...
Text Solution
|
Six identical balls are lined in a straight groove made on a horizonta...
Text Solution
|
A wooden block of mass M rests on a horizontal surface. A bullet of ma...
Text Solution
|
A ball moving with speed v hits another identical ball at rest. The tw...
Text Solution
|
A bag of sand of mass M is suspended by a string. A bullet of mass m i...
Text Solution
|