centripetal acceleration
Authored by Umesh Rana
Physics
9th Grade
Used 13+ times
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3 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A rock attached to a string swings in a vertical circle. At the highest point,
no forces act on the rock.
only one force acts on the rock.
two forces act on the rock and their resultant is zero.
two forces act on the rock and their resultant is not zero.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram shows a stone tied to the end of a length of string and is whirled round in a horizontal circle . What provides the centripetal force on the stone?
The weight of the string.
The friction in the string.
The tension in the string.
The air resistance from the surroundings.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
State what provides the centripetal force for an electron orbits the positive nucleus of an atom.
Friction between the tyres and the road.
Attractive electrostatic force acting on the proton due to the electron.
Electrical force acting on the electron due to the positive nucleus.
Gravitational force acting on the planet due to the Sun.
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