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A meter stick is suspended at its midpoint and two blocks are attached. A 10-N block is attached 20 cm to the left of the midpoint. Where must a 40-N block be placed to balance?
250 J
Toppling occurs when an unbalanced torque exists.
the same as its potential energy at that point
four times as far
The object spins about its center of mass.
force times distance
5 cm to the right of the midpoint
7%
Suppose you put in 100 J of work on a lever and get out 93 J of work. How much of the work input is lost as heat?
250 J
Toppling occurs when an unbalanced torque exists.
the same as its potential energy at that point
four times as far
The object spins about its center of mass.
force times distance
5 cm to the right of the midpoint
7%
Which statement is true about toppling?
250 J
Toppling occurs when an unbalanced torque exists.
the same as its potential energy at that point
four times as far
The object spins about its center of mass.
force times distance
5 cm to the right of the midpoint
7%
In physics, work is defined as______________.
250 J
Toppling occurs when an unbalanced torque exists.
the same as its potential energy at that point
four times as far
The object spins about its center of mass.
force times distance
5 cm to the right of the midpoint
7%
If you apply 25 N of force on a box over 10 meters, how much work did you do on the box?
250 J
Toppling occurs when an unbalanced torque exists.
the same as its potential energy at that point
four times as far
The object spins about its center of mass.
force times distance
5 cm to the right of the midpoint
7%
A boulder at the top of a vertical cliff has a potential energy of 100 MJ relative to the ground below. It rolls off the cliff. When it is halfway to the ground its kinetic energy
250 J
Toppling occurs when an unbalanced torque exists.
the same as its potential energy at that point
four times as far
The object spins about its center of mass.
force times distance
5 cm to the right of the midpoint
7%
How much farther will a car traveling at 100 km/s skid than the same car traveling at 50 km/s?
250 J
Toppling occurs when an unbalanced torque exists.
the same as its potential energy at that point
four times as far
The object spins about its center of mass.
force times distance
5 cm to the right of the midpoint
7%
Which statement is TRUE of an object that spins when it’s thrown through the air?
250 J
Toppling occurs when an unbalanced torque exists.
the same as its potential energy at that point
four times as far
The object spins about its center of mass.
force times distance
5 cm to the right of the midpoint
7%
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