A body of mass 1kg begins to more under ...

A body of mass 1kg begins to more under the action of a time dependent force `F=(2thati+3t^(2)hatj)N` where `hatiandhatj` are unit vectors along x and y axes. What power will be developed by a force at time t?

`(2t^3+3t^5)W`

`(2t^2+3t^3)W`

`(2t^2+3t^4)W`

`(2t^3+3t^4)W`

Text Solution

Verified by Experts

Topper's Solved these Questions

THERMODYNAMICS
SARAS PUBLICATION|Exercise EXAMPLE|15 Videos

Similar Questions

Explore conceptually related problems

A body of mass of 3 kg initially at rest wakes under the action of an applied horizontally force of 10 N on a table with co-efficient of kinetic friction = 0.3, then what is the workdone by the applied force in 10 s :

The position vector of a particle vecR as a function of time is given by: vecR=4sin(2pit)hati+4cos (2pit)hatj where R is in meters,t is in second hati and hatj and denote unit vectors along x and y directions respectively Which one of the following statements is wrong for the motion for the motion of particle?

A body under the action of a force F=6hati- 8hatj+ 10hatk , acquires an acceleration of 1m//s^2 . The mass of this body must be :

The body moves under the action of constant force along a straight line. The instantaneous power developed by this force with time 't' is correctly represented by:

A body is moving along z-axis of a coordinate system under the effect of a constant force F= (2veci+3hatj+vhatk)N . Find the work done by the force in moving the body a distance of 2 m along z-axis

A body of mass 1kg is executing SHM given by x=4cos(100t+pi/2) cm what is the velocity ?

A body constrained to move along the x - axis of a coordinate system is subjected to a constant force vec(F)=(2hat(i)-hat(j)+4hat(k))N , then what is the workdone by this force in moving the body over a distance of 4 m along the x - axis.

The initial speed of a body of mass 2.0 kg is 5.0 ms^(-1) a force fro 4s in the direction of motion of the body the force time graph is shown in the diagram calculate the impulse of the force and the final speed of the body

SARAS PUBLICATION-WORK, ENERGY AND POWER-EXAMPLE

A body of mass 4 m is lying in xy - plane at rest. It suddenly explode...
Text Solution
|
A force vecF= alpha hat i +3 hatj+6hatk is acting at a point vec r =2h...
Text Solution
|
Two particles A and B, move with constant velocities, vecv1 and vecv2 ...
Text Solution
|
On a frictionless surface a block of mass. M moving at a speed v colli...
Text Solution
|
A block A of mass m1 rests on a horizontal table . A light string conn...
Text Solution
|
Two particles of masses m1, m2 move with intial velocity mu1 and mu2. ...
Text Solution
|
A wind with speed 40 m/s blows parallel to the roof of a house. The a...
Text Solution
|
Three blocks A, B and C of mass 4 kg , 2kg and 1kg respectively , are ...
Text Solution
|
A particle mass m is driven by a machine that delivers a constant pow...
Text Solution
|
A particle moves so that its position vector is given by vecr = cos om...
Text Solution
|
A refrigerator works between 4^@C and 30^@ , it is required to remove...
Text Solution
|
A body of mass 1kg begins to more under the action of a time dependent...
Text Solution
|
A square ABCD carrying a current I, is placed near and coplanar XY car...
Text Solution
|
In the given figure , a= 15m//s^2 represent the total acceleration of ...
Text Solution
|
Two identical balls A and B having velocities of 0.5M//s and -0.3m//s...
Text Solution
|
A particle moves from a point (-2hati +5 hatj) to (4 hatj + 3 vec k) w...
Text Solution
|
A spring of force constant k is cut into the length of ratio 1:2:3. Th...
Text Solution
|
Two blocks A and B masses 3m and m respectively are connected by a ma...
Text Solution
|
The diagram below show regions of equipotential.A positive charge is m...
Text Solution
|
A rope is wound round a hollow cylinder of mass 3 kg and radius 40 cm....
Text Solution
|