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Course: AP PHYSICS 1
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AP PHYSICS 1

1. Kinematics

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2. Force and Translational Dynamics

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3. Work, Energy, and Power

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4. Linear Momentum

0/29

5. Torque and Rotational Dynamics

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6. Energy and Momentum of Rotating Systems

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7. Oscillations

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8. Fluids

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Quiz

2.4.2 Tension in Ideal and Non-Ideal Strings – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
The tension in an ideal string is:
greatest at the top
greatest at the bottom
the same everywhere
zero at the middle
2.
A hanging rope of mass M has a block m at its end. The tension is greatest:
at the bottom
in the middle
equal everywhere
at the top
3.
A 3.0 kg block and a 1.0 kg rope are pulled with 8.0 N on a frictionless table. The tension at the block is:
6.0 N
8.0 N
2.0 N
4.0 N
4.
Why can the tension be different on the two sides of a real pulley?
The string is stretched
The pulley has friction or mass and needs a net torque
Gravity acts on the pulley
The tension is uniform always
5.
A 4.0 kg uniform rope hangs from the ceiling with nothing attached. The tension at the midpoint is:
39 N
9.8 N
19.6 N
0 N
6.
When is it a good approximation to treat a string as ideal?
When it is much heavier than the objects
When it stretches a lot
Never
When its mass is small compared with the objects it connects
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Part of 2. Force and Translational Dynamics — see every lesson and quiz in this unit.
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