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GCSE
Gcse Physics
Forces - Centre Of Mass 01
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Q.1
What is the frequency of a simple pendulum if the time period is ten seconds?
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0.01 Hz
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0.1 Hz
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1 Hz
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10 Hz
Q.2
What is the formula for the period of oscillation for a simple pendulum?
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T = 2f
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T = 3f
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T = 4f
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T = 1⁄f
Q.3
Where is the centre of mass located on a rectangle of length 5 cm and width 3 cm if the mass is distributed evenly throughout the object?
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(1.5,2.5)
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(3,5)
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(2.5,1.5)
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(5,3)
Q.4
What is centre of mass?
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It is the point at which the mass of an object may be thought to be concentrated
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The point at which an object has no mass
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A number of points across an object which measure the same mass
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None of the above
Q.5
A freely suspended object will come to rest with its centre of mass directly below which point?
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Point of recession
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Point of suspension
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The centre of mass doesn't lie directly below any point
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None of the above
Q.6
What does the time period depend on?
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Force with which the pendulum is released
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Width of string used in the pendulum
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Length of the pendulum
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All pendulums have the same time period
Q.7
What is the time period if the frequency is 100 Hz?
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1 s
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0.1 s
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0.01 s
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0.001 s
Q.8
A simple pendulum oscillates 50 times per second. What is the frequency of the pendulum?
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25 Hz
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50 Hz
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75 Hz
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100 Hz
Q.9
How can you locate the centre of mass of an irregular object?
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Suspend the object from two locations and drop a plumb line from the suspension points
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Suspend the object from one location and drop a plumb line from the suspension point
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Measure to the centre of the object
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None of the above
Q.10
Where is the centre of mass located in a regularly shaped object?
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Along an axis of symmetry
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Always in the centre of the object
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Always 2cm to the left of the centre
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Always 2cm to the right of the centre
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