Home
Class 11
PHYSICS
A variable force, given by the 2-dimensi...

A variable force, given by the 2-dimensional vector `vecF = (3x^(2)hati+4hatj`), acts on a particle. The force is in newton and x is in metre. What is the change in the kinetic energy of the particle as it moves from the point with coordinates (2, 3) to (3, 0)? (The coordinates are in metres.)

A

`-7 J`

B

Zero

C

`+7 J`

D

`+19 J`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

A varable force, given by the 2- dimensional vector overlineF=(3xx^(2)hati+4 hatj), acts on a particle. The force is in newton and x is in metre. What is the change in the kinetic energy of the particle as it moves from the point with coordinates (2,3) to (3,0) (The coornates are in metres)

A force vecF = ( 3hati + 4hatj) N is acting on a particle. Work done by the force is zero, when particle is moving on the line 2y + Px = 2 , the value of P is

A force vecF=(3xN)hati+(4N)hatj , with x in meter, acts on a particle, changing only the kinetic energy of the particle. How mcuh work is done on the particle as it moves from coordinates (2m, 3m, 5m) to (3m, 0m, 6m) ? Does the speed of the particle increase, decrease, or remain the same?

A force (hati-2hatj+3hatk) acts on a particle of position vector (3hati+2hatj+hatk) . Calculate the torque acting on the particle.

A force (hati-2hatj+3hatk) acts on a particle lying at origin. What is the torque acting on the particle about the origin.

A force (hati-2hatj+3hatk) acts on a particle lying at origin. What is the torque acting on the particle about origin?

Kinetic energy of a particle moving in a straight line varies with time t as K = 4t^(2) . The force acting on the particle

A force (hati-2hatj+3hatk) acts on a particle of position vector (3hati+2hatj+hatk) . Calculate the hatj^(th) component of the torque acting on the particle.

A force F=(2+x) acts on a particle in x-direction where F is in newton and x in metre. Find the work done by this force during a displacement form 1. 0 m to x = 2.0 m.

A force vecF=6t^(2)hati+4thatj is acting on a particle of mass 3 kg then what will be velocity of particle at t=3 second and if at t=0, particle is at rest:-