Linear Velocity

Question 1
Marks : +2 | -2
Pass Ratio : 100%
The component of the accelertion, perpendicular to the velocity of the particle, at the given instant is called
radial component
tangential component
coriolis component
none of the mentioned
Explanation:
The centripetal or radial component, is perpendicular to the velocity of the particle at the given instant.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
In the above question, if both the links OA and OB turns in clockwise direction, then the rubbing velocity at the pin joint O is
ω1.ω2.r
(ω1-ω2)r
(ω1+ω2)r
(ω1-ω2)2r
Explanation:
Consider two links OA and OB connected by a pin joint at O
Question 3
Marks : +2 | -2
Pass Ratio : 100%
The magnitude of linear velocity of a point B on a link AB relative to point A is
ω x AB
ω(AB)2
ω2AB
(ω x AB)2
Explanation:
None
Question 4
Marks : +2 | -2
Pass Ratio : 100%
ABCD is a four bar mechanism in which AB = 310mm and CD = 450mm. AB and CD are both perpendicular to the fixed link AD. If the velocity of B at this condition is v. Then the velocity of C is
v
3/2 v
9/4 v
Explanation:
Velocity at C = CD/AB x velocity at B
Question 5
Marks : +2 | -2
Pass Ratio : 100%
The relative velocity of B with respect to A in a rigid link AB is
parallel to AB
perpendicular to AB
along AB
at 450
Explanation:
The relative velocity of any two points on a rigid link is always normal to the line joining the two points.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
The direction of linear velocity of any point on a link with respect to another point on the same link is
parallel to the link joining the points
perpendicular to the link joining the points
at 450 to the link joining the points
none of the mentioned
Explanation:
The relative velocity of any two points on a rigid link is always normal to the line joining the two points.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω1 rad/s in the clockwise direction and the link OB turns with angular velocity ω2 rad/s in the anti-clockwise direction, then the rubbing velocity at the pin joint O is
ω1.ω2.r
(ω1-ω2)r
(ω1+ω2)r
(ω1-ω2)2r
Explanation:
Consider two links OA and OB connected by a pin joint at O
Question 8
Marks : +2 | -2
Pass Ratio : 100%
The component of the accelertion, parallel to the velocity of the particle, at the given instant is called
radial component
tangential component
coriolis component
none of the mentioned
Explanation:
The centripetal or radial component, is perpendicular to the velocity of the particle at the given instant.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
A point B on a rigid link AB moves with respect to A with angular velocity ωrad/s. The total acceleration of B with respect to A will be equal to
vector sum of radial component and coriolis component
vector sum of tangential component and coriolis component
vector sum of radial component and tangential component
vector difference of radial component and tangential component
Explanation:
None
Question 10
Marks : +2 | -2
Pass Ratio : 100%
A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface. Which of the following statement is correct in this regard?
All points of the disc have the same velocity.
The centre of the disc has zero acceleration.
The centre of the disc has centrifugal acceleration.
The point on the disc making contact with the plane surface has zero acceleration.
Explanation:
None