Home
Class 11
PHYSICS
A helicopter of mass 1000kg rises with v...

A helicopter of mass `1000kg` rises with vertical acceleration of `15ms^(-2)`. The crew and passengers together weigh `300kg`. Give the magnitude and direction of
`(a)` force on floor by the crew and passengers.
`(b)` action on the rotor of the helicopter on the surrounding air.
`(c )` force on the helicopter due to the surrounding `(g=10Nms^(-2))`

Text Solution

Verified by Experts

Mass of the helicopter `=1000kg`
Mass of crew and passengers `=300kg`
acceleration `a=15ms^(-2)`
acceleration due to gravity `=10ms^(-2)`
`(a)` Force on the floor by the crew and passengers `=300(15+10)=7500N`
`a^(1)=a+g` both acting downward.
`(b)` Action on rotor `=(1000+300)(15+10)=1300xx25=32500N` downwards
`(c )` Force on helicopter `=32500N` upwards
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    SUBHASH PUBLICATION|Exercise Five mark question|4 Videos

  • KINETIC THEORY

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|19 Videos

  • MECHANICAL PROPERTIES OF FLUIDS

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|33 Videos

Similar Questions

Explore conceptually related problems

A wooden block of mass 2 kg rests on a soft horizontal floor. When an iron cylinder of mass 25 kg is placed on top of the block, the floor yields steadily and the block and the cylinder together go down with an acceleration of 0.1 m s^(-2) . What is the action of the block on the floor (a) before and (b) after the floor yields ? Take g = 10 m s^(-2) . Identify the action-reaction pairs in the problem.

A ball of mass 0-2 kg is thrown vertically upwards by applying a force by hand. If the hand moves 0.2 m while applying the force and the ball goes upto 2 m height further, find the magnitude of the force. Consider g = 10 m//s^(2) :

A block of mass 4 kg is placed on the floor. The coefficient of static friction is 0.4. If a force of 12 N is applied on the block parallel to the floor, the force of friction between the block and floor (g = 10 ms^(-2))

A monkey of mass 40kg climbs on a rope which can stand a maximum tension of 600N . In which of the following cases will the rope break ? The monkey (a) climbs up with acceleration of 6ms^(-2) . (b) climbs down with acceleration of 4ms^(-2) (c ) climbs up with uniform speed of 5ms^(-1) (d) falls down the rope nearly freely under gravity (g=10ms^(-2)) .

Block A of mass 2 kg is placed over block B of mass 8 kg .The combination is placed over a rough horizonatal surface .Cofficient of friction between B and the floor is 0.5 .Coefficient of friction berween A and B is 0.4 .A horizontal force of 10 N is applied on block B .The force of friction between A and B is (g=10 m s^(-2))

Two rectangular blocks A and B of masses 2 kg and 3 gk respectively are connected by a spring of spring constant 10.8Nm^(-1) and are placed on a frictionless horizontal surface. The block A was given an initial velocity of 0.15 ms^(-1) in the direction shown in the figure. The maximum compression of the spring during the motion is