When a force vector vecF=(hati+2hatj+hat...

When a force vector `vecF=(hati+2hatj+hatk)`N acts on a body and produces a displacement of `vecS=(4hati+hatj+7hatk)` m, then the work done is

A

9J

B

13J

C

5J

D

1J

Text Solution

Verified by Experts

The correct Answer is:

B

`W=vecF.vecS.`

Topper's Solved these Questions

VECTORS
NARAYNA|Exercise LEVEL-II (C.W)|16 Videos
VECTORS
NARAYNA|Exercise LEVEL-I (H.W)|27 Videos
VECTORS
NARAYNA|Exercise C.U.Q|34 Videos
UNITS AND MEASUREMENTS
NARAYNA|Exercise STATEMENT TYPE QUESTION|23 Videos
WAVES
NARAYNA|Exercise Exercise-IV|56 Videos

Similar Questions

Explore conceptually related problems

A force vecF=(5hati+4hatj)N acts on a body and produces a displacement vecS=(6hati-5hatj+3hatk) m. The work done will be

A force vecF = (5 hati + 4 hatj)N acts on a body and produces a displacement vecs = (6 hati - 5 hatj + 3 hatk)m . The work done will be

A force vecF=6hati+2hatj+3hatk acts on a particle and produces a displacement of vecS=2hati-3hatj+xhatk . If the work done is zero, the value of x is

A force vecF=6hati+2hatj-3hatk acts on a particle and produces a displacement of vecs=2hati-3hatj+xhatk . If the work done is zero, the value of x is

A force 2hati+3hatj+4hatk N acts on a body for 4 sec, produces a displacement of (3hati+4hatj+5hatk) m. the power used is

A force vecF=5hati+6hatj+4hatk acting on a body, produces a displacement vecS=6hati-5hatk . Work done by the force is

NARAYNA-VECTORS-LEVEL-I (C.W)

Two billiard balls are moving on a table and the component velocities ...
Text Solution
|
If vecA=2hati-3hatj+4hatk, its components in YZ-plane and ZX-plane are...
Text Solution
|
A car weighing 100kg is on a slope that makes and angle 30^(@) with th...
Text Solution
|
A room has dimensions 3mxx4mxx5m. A fly starting at one corner ends up...
Text Solution
|
If vecP=hati+2hatj+6hatk, its direction cosines are
Text Solution
|
The value of 'm', if hati+2hatJ-3hatk is parallel to 3hati+mhatj-9hatk...
Text Solution
|
A force 2hati+hatj-hatk newton acts on a body which is initially at re...
Text Solution
|
When a force vector vecF=(hati+2hatj+hatk)N acts on a body and produce...
Text Solution
|
The angle between the two vectors vecA=hati+2hatj-hatk and vecBi=-hati...
Text Solution
|
In a righht angled triangle the three vectors veca,vecb and vecc add t...
Text Solution
|
A vector parallel to the vector (hati+2hatj) and having magnitude 3sqr...
Text Solution
|
If vec2hati+3hatj and vecB=2hatj+3hatk the component of vecB along vec...
Text Solution
|
if the vectors P = alphahati+alphaj+3hatk and Q = alphahati - 2 hatj -...
Text Solution
|
A force of 2i+3j+2k N acts on a body for 4 and produces a displacement...
Text Solution
|
If theta is the angle between unit vectors vecA and vecB, then ((1-vec...
Text Solution
|
Find the torque of a force vecF=3hati+2hatj+hatk acting at the point v...
Text Solution
|
The area of the triangle whose adjacent sides are represented by the v...
Text Solution
|
The magnitude of scalar and vector products of two vectors are 48sqrt(...
Text Solution
|
The diagonals of a parallelogram are vecA=2hati-3hatj+hatk and vecB=-2...
Text Solution
|
Deduce the condition for the vectors 2hati + 3hatj - 4hatk and 3hati -...
Text Solution
|