Home
Class 11
PHYSICS
A car having mass 4000 kg is lifted up...

A car having mass 4000 kg is lifted up a distance of 60 m by a crane in 2 min . A second crane does the same job in 4 min . How much fuel is consumed by two cranes ? What is the power supplied by each crane ? Ignore power dissipation against friction .

Text Solution

AI Generated Solution

To solve the problem, we will calculate the potential energy (which is the work done) for both cranes and then find the power supplied by each crane. ### Step 1: Calculate the potential energy (PE) The formula for potential energy is given by: \[ PE = mgh \] where: ...
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    MODERN PUBLICATION|Exercise PRACTICE PROBLEMS|27 Videos

  • WORK, ENERGY AND POWER

    MODERN PUBLICATION|Exercise Conceptual Questions|20 Videos

  • WAVES

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|14 Videos

Similar Questions

Explore conceptually related problems

A car of mass 2000kg is lifted up a distance of 30m by a crane in 1 minute . A second crane does the same job in 2 minues. Do the cranes consume the same or different amounts of fuel ? What is the power supplied by each crane ? Neglect power disspation against friction.

A car of mass 1500 kg is lifted up a distance of 30 m by crane A in 0.5 minutes. The second crane B does the same jod in 1 minute . The ratio of their powers is

A car of mass 2000 kg is lifted up a distance of 30m by a crane in 1 min. A second crane does the same job is 2 min. What is the power applied by each crane? Do the crnae? Do the caranes consume the same or different amount of fule? Neglect power dissipation against friction.

A body of mass 1000 kg is lifted up by a crane through a distance 15 min 1 minute. A second crane does the same job in two minute. What is the amount of work done by each crane and what is the ratio of their powers? (g=10m//s^(2))

In a race, Ravi covers 5 km in 20 min. How much distance will he cover in 100 min ?

Raman covers 1 km in 8 min while Suman covers the same distance in 10 min. By what distance does Raman beat suman ?

A crane lifts a mass of 100 kg to a height of 10 m in 20 s. The power of the crane is (Take g = 10 m s^(-2) )