True or False?

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True or False?

• 20 questions

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Question 1

• The moment of a force F about a
• pivot is F/d

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Question 2

• The centre of mass of an object is
• the point where its mass is spread
• out.

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Question 3

• A suspended object is in equilibrium
• when its centre of mass is directly
• beneath the point of suspension.

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Question 4

• The centre of mass of a symmetrical
• object is off the axis of symmetry.

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Question 5

• W1d1W2d2

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Question 6

• The stability of an object is
• decreased by making its base as
• wide as possible

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Question 7

• The stability of an object is
• increased by making its centre
• of mass as high as possible.

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Question 8

• An object will topple over if the
• line of action of its weight is
• outside its base.

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Question 9

• The greater the mass of an object
• the lower the centripetal force.

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Question 10

• The Centripetal force increases
• as the radius of the circle decreases.

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Question 11

• Gravity is measured in
• Newtons.

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Question 12

• The force of gravity between two
• objects is an attractive force.

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Question 13
The greater the distance between two objects the
greater the force of gravity.
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Question 14

• The smaller two objects are the
• greater the force of gravity.

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Question 15

• The larger an orbit is the
• longer
• the orbiting body takes to go
• round.

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Question 16

• If the speed of a planet in orbit is
• too high it will spiral into the Sun.

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Question 18

• A Geostationary satellite orbits
• the
• earth in 20 hours.

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Question 17

• If the speed of a planet in orbit is
• too low it will spiral into the Sun.

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Question 19
Geostationary satellites are used for many
purposes Including weather forecasting and
police surveillance.
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Question 20

• Monitoring satellites are in much
• lower orbits than geostationary.