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Physics – Newton’s Laws – Tension
Kowinsky
NAME: ________________
Pd: _________
1.) What is the greatest upward acceleration a 70.0 kg boy climbing a rope can attain
without breaking the rope if the rope can support 1000 N? (4.5 m/s2 Upwards)
2.) A rope whose working strength is 2000 N is used to tow a 1000 kg car. When towing,
what is the maximum acceleration the tower can produce without breaking the rope? (2
m/s2)
3.) A man wants to escape from a burning building by sliding down a rope which can
only support 400 N. If the man weighs 800 N, what is the smallest acceleration he can
have and not break the rope? (4.9 m/s2 Downward)
4.) A 2.0 x 10-4 kg spider is suspended from a thin strand of spider web. The greatest
tension the web can withstand without breaking is 2.0 x 10-3 N. What is the maximum
acceleration with which the spider can safely ascend the strand? (.2 m/s2 Upward)
5.)
A train consists of a caboose (mass = 1000 kg), a car (mass 2000
kg), and an engine car (mass 2000 kg). If the train has an acceleration of 5 m/s2, what is
the tension force in the coupling between the middle car and the engine car? (15,000 N)
Physics – Newton’s Laws – Tension
Kowinsky
NAME: ________________
Pd: _________
6.) A person is standing on an elevator with a spring scale. A mass is suspended from the
spring scale. The scale reads 5 newtons. As the elevator begins to move, the scale
momentarily reads 6 newtons. What was the acceleration of the elevator? (1.96 m/s2)
7. )A 3 kg decoration is suspended by a string from the ceiling inside an elevator. A) The
elevator is traveling upward with a constant speed. What is the tension on the string? B)
Once the elevator reaches the top floor, it accelerates at a rate of –2 m/s2 to stop. What is
the tension on the string? C) The elevator then travels to the lower level to pick up
passengers. Once they are picked up, the elevator momentarily accelerates upward at 2
m/s2 , What is the tension on the string now? (29.4 N, 23.4 N, 35.4 N)
8.) A physics student brings a spring scale with an attached mass onto the phantoms
revenge. While standing in line, the scale reads 15 N. During the ride at one of the tight
turns, the scale momentarily reads 35 N. What was the acceleration of the roller coaster
during the turn? (13 m/s2)
9. )
Box G and H are in full contact of one another on a frictionless
surface. Box G has a mass of 5 kg, box H has a mass of 10 kg. If a force of 80 N is used
to push on box G, as shown in the diagram, how much force will box H experience?
How much force will box G experience? What is the total force both boxes will
experience? (53 N, 27 N, 80N)