Physics
The motion of a door when a force is applied on its handle is:
- rotational motion
- linear motion
- angular motion
- zig-zag motion
Force
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Answer
rotational motion
Reason — If a body is pivoted at a point and the force is applied on the body at a suitable point, it rotates the body about the axis passing through the pivoted point. This is the turning effect of force and the motion of body is called the rotational motion.
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Related Questions
The moment of a force about a given axis depends on:
- only on the magnitude of force
- only on the perpendicular distance of force from the axis
- neither the force nor the perpendicular distance of force from the axis
- both, the force and its perpendicular distance from the axis.
For producing the maximum turning effect on a body by a given force, the perpendicular distance of the line of force from the axis of rotation should be :
- minimum
- it does not matter
- maximum
- zero
The moment of force for anticlockwise moment is taken as …………… and for clockwise moment is taken as ……………
- positive, negative
- negative, positive
- positive, positive
- negative, negative
The direction of rotation of a pivoted body can be changed by changing:
- the direction of force
- the point of application of force
- both the direction of force and the point of application of force
- the magnitude of force