A 3kg model rocket is launched striaght ...

A `3kg` model rocket is launched striaght up with sufficient initial speed to reach a maximum height of `100 m`, even though air resistance (a non-conservative force) performs -`900 J` of work on the rocket. The highest the rocket would have gone without air resistance will be

70 m

130 m

180 m

230 m

Text Solution

Verified by Experts

The correct Answer is:

`(2)`

`mgh + W_(f) = mgH`

Topper's Solved these Questions

WORK , ENERGY & POWER
NARAYNA|Exercise EXERCISE -II (H.W)|75 Videos
WORK , ENERGY & POWER
NARAYNA|Exercise EXERCISE -III|54 Videos
WORK , ENERGY & POWER
NARAYNA|Exercise EXERCISE -1 (H.W)|60 Videos
WAVES
NARAYNA|Exercise Exercise-IV|56 Videos
WORK POWER AND ENERGY
NARAYNA|Exercise Level-VI (Integer)|12 Videos

Similar Questions

Explore conceptually related problems

A 3.00 kg model rocket is launched straight up. It reaches a maximum height of 1.00xx10^(2) m above where its engine cuts out, even though air resistance performs -8.00xx10^(2)J of work on the rocket. What would have been this height if there were no air resistance ?

A 0.5 kg ball is thrown up with an initial speed 14 m/s and reaches a maximum height of 8.0 m . How much energy is dissipated by air drag acting on the ball during the ascent

In a shotput event an athlete throws the shotput of mass 10 kg with an initial speed of 1 ms^(-1) at 45^@ from a height 1.5 m above ground. Assuming air resistance to be negligible and acceleration due to gravity to be 10 ms^(-2) , the kinetic energy of the shotput when it just reaches the ground will be

A rocket is launched vertical from the surface of the earth of radius R with an initial speed v . If atmospheric resistance is neglected, then maximum height attained by the rocket is

In a shotput event an athlete throws the shotput of mass 20 kg with an initial speed of 2 m s^(-1) at 45^@ from height 3 m above ground. Assuming air resistance to be negligible and acceleration due to gravity to be 10 m s^(-2) , the kinetic energy of the shotput when it just reaches the ground will be

A tennis ball launcher is placed on the floor at the front end of a train that has a uniform forward acceleration of 2 m/s2. The launcher projects a ball at an initial speed of 20 m/s with respect to the train toward its rear. The ball achieves a maximum height of 10.0 m. Ignore air resistance. Find how far (in m) from the front end of the train the ball lands inside the train.

A rocket of mass M is launched vertically from the surface of the earth with an initial speed V= sqrt((gR)/(2)) . Assuming the radius of the earth to be R and negligible air resistance, the maximum height attained by the rocket above the surface of the earth is (R)/(X) where X is:

A rocket is launched at an angle 53^(@) to the horizontal with an initial speed of 100ms^(-1) . It moves along its initial line of motion with an acceleration of 30ms^(-2) for 3 seconds. At this time its engine falls & the rocket proceeds like a free body. Find: (i) the maximum altitude reached by the rocket (ii) total time of flight. (iii) the horizontal range. [sin 53^(@) = 4//5]

A particle is unchanged and is thrown vertically upward from ground level with a speed of 5sqrt(5) m//s in a region of space having uniform electric field As a result, it attains a maximum height h. The particle is then given a positive charge +q and reaches the same maximum height h when thrown vertically upward with a speed of 13 m//s Finally the particle is given a negative charge -q Ignoring air resistance determine the speed (in m//s) with which the negatively charged particle must be thrown vertically upward, so that it attains exactly the same maximum height h.

A baseball of mass m is thrown upward with some initial speed. If air resistance is neglected, what is the force on the ball: (a) when it reaches half its maximum height, and (b) when it reaches its peak?

NARAYNA-WORK , ENERGY & POWER -EXERCISE -II (C.W)

A block of mass 30.0 kg is being brought down by a chain. If the block...
Text Solution
|
A body of mass 2 kg is thrown vertically upwards with K.E of 245 J. Th...
Text Solution
|
A 3kg model rocket is launched striaght up with sufficient initial spe...
Text Solution
|
In the arrangement shown in figure, string is light and inextensible a...
Text Solution
|
The bob of a pendulum is released from a horizontal position. If the l...
Text Solution
|
System shown in figure is released from rest . Pulley and spring is ma...
Text Solution
|
The potential energy of a particle of mass m is given by U = (1)/(2) ...
Text Solution
|
Figure shows the vertical section of a frictionless surface. A block o...
Text Solution
|
A body of mass m falls from a height h and collides with another body ...
Text Solution
|
Power supplied to a particle of mass 4 kg varies with time as P=(3t^(2...
Text Solution
|
A particle of mass m is moving in a circular path of constant radius r...
Text Solution
|
A constant power P is applied to a particle of mass m. The distance tr...
Text Solution
|
A body is moved from rest along a straight line by a machine deliverin...
Text Solution
|
Power applied to a particle varices with time as P =(3t^(2)-2t + 1) wa...
Text Solution
|
A car of mass M accelerates starting from rest. Velocity of the car is...
Text Solution
|
Power supplied to a particle of mass 4 kg varies with time as P=(3t^(2...
Text Solution
|
A particle is moving along x-axis under the action of a force F, which...
Text Solution
|
A body of mass m is projected with intial speed u at an angle theta wi...
Text Solution
|
A stone is tied to a string of length l and is whirled in a vertical c...
Text Solution
|
A simple pendulum is oscillating with angular displacement 90^(@) For ...
Text Solution
|