forces train2

8/3/2019 Forces Train2

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Forces and Trains

Forces and Trains


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Forces and Trains

Forces and Trains

Two train engines are exerting identicalforces on train cars shown below. Which setof trains has the largest acceleration?

Two train engines are exerting identicalforces on train cars shown below. Which set

of trains has the largest acceleration?

A B

(A) A(B) B

(C) Both have the same acceleration(D) Unable to determine

A

A


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Forces and TrainsForces and Trains

Two trains are accelerating with the sameacceleration. Which train engine is exertingthe larger force?

Two trains are accelerating with the sameacceleration. Which train engine is exerting

the larger force?

A B

(A) A(B) B

(C) Both are exerting the same force(D) Unable to determine

BB


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The Green Lantern uses his power ring tocreate a force beam on a oil drum as shownbelow. Based on the angle of the force, is the

normal force acting on the drum larger than,smaller than, or equal to the weight of thedrum?(A) greater than

(B) less than(C) equal to(D) unable to determine

AA


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BB


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BB


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Elevator Problems:Elevator Problems:

weight: gravity pulling itweight: gravity pulling it

tension: cord pulling it uptension: cord pulling it up

If the elevator is moving

downward and speeding up, whatdirection is the acceleration?

If the elevator is moving

downward and speeding up, whatdirection is the acceleration?

(A) Upward

(B) Downward

(C) acceleration is zero

(D) Unable to determine(E) Not possible

(A) Upward

(B) Downward

(C) acceleration is zero


(B) Downward the acceleration must be!!


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If the elevator is moving upward

at a constant speed, which islarger:

the tension or the weight?

If the elevator is moving upward

at a constant speed, which islarger:the tension or the weight?

(A) Tension

(B) Weight

(C) Tension equals weight


(A) Tension

(B) Weight

(C) Tension equals weight


(C) Equal the tension and weight must be!!


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If the elevator is accelerating

upward with T=W how is itmoving?

If the elevator is accelerating

upward with T=W how is itmoving?

(A) Slowing Down

(B) Speeding Up

(C) Moving at a constant

velocity(D) Unable to determine

(E) Not possible

(A) Slowing Down

(B) Speeding Up

(C) Moving at a constantvelocity

(D) Unable to determine

(E) Not possible

(E) Not possible this is !!


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Jabba the Hut is on ascale that is accelerating

downward. Is the scalereading larger than,smaller than, or equal tohis actual weight?

(A) Larger(B) Smaller(C) Equal to(D) Not possible

(E) Unable to determine

Jabba the Hut is on ascale that is acceleratingdownward. Is the scalereading larger than,smaller than, or equal tohis actual weight?

(A) Larger(B) Smaller(C) Equal to(D) Not possible

(E) Unable to determine

1

20 (B)

Smaller

(B)

Smaller


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Jabba the Hut is on ascale that is moving

upward at a constantvelocity. Is the scalereading larger than,smaller than, or equal tohis actual weight?

(A) Larger(B) Smaller(C) Equal to

(D) Not possible(E) Unable to determine

Jabba the Hut is on ascale that is movingupward at a constantvelocity. Is the scalereading larger than,smaller than, or equal tohis actual weight?

(A) Larger(B) Smaller(C) Equal to

(D) Not possible(E) Unable to determine

1

20 (C) Equal

to

(C) Equal

to

forces train2

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